Feel Bad vs. Feel Badly – Which is Correct?

When deciding between “feel bad” and “feel badly,” the correct choice almost always depends on whether you’re describing an emotion or a physical state versus your sense of touch. Generally, you should use “feel bad” to express an emotional or physical condition, as “bad” functions as an adjective modifying “you.” “Feel badly” implies a problem with your ability to feel things.

Feel Bad or Feel Badly – Which is Correct?

The distinction between “feel bad” and “feel badly” hinges on understanding linking verbs versus action verbs and the roles of adjectives versus adverbs. The verb “to feel” can function in two main ways:

• As a linking verb, it connects the subject to a word that describes or renames the subject. When “feel” describes an emotional state, a physical condition, or a sensation, it is a linking verb and should be followed by an adjective. Thus, “feel bad” is correct, as “bad” describes your state of being.
• As an action verb, it describes the act of touching or sensing. When “feel” refers to the physical act of touching, it can be followed by an adverb. Therefore, “feel badly” would grammatically describe a poor ability to touch or sense, but this usage is rare and often sounds awkward.

The confusion often arises because people mistakenly assume “feel” is always an action verb requiring an adverb. However, in most common contexts, “feel” is a linking verb.

The Best Trick to Remember the Difference

A simple and effective trick to remember the difference is the “Swap Test.” If you can replace “feel” with a form of the verb “to be” (am, is, are, was, were) and the sentence still makes sense, then “feel” is acting as a linking verb, and you should use the adjective, “bad.”

• “I feel bad.” → “I am bad.” (This makes sense, meaning you are in a bad state or condition.)
• “I feel badly.” → “I am badly.” (This doesn’t make sense in the context of describing an emotion or physical state. “I am badly” sounds incomplete or grammatically incorrect for expressing how you feel.)

If you’re truly describing a faulty sense of touch, the adverb “badly” would be appropriate, but this is a very specific and uncommon scenario (e.g., “My fingers feel badly after the injury, so I can’t discern textures well.”). For expressing emotions or general well-being, always opt for “feel bad.”

Word	Part of Speech	Meaning	Example
Bad	Adjective	Unpleasant, ill, poor quality, morally wrong, regretful (when used with “feel”)	“I feel bad about missing your party.” (Describes an emotional state)
Badly	Adverb	In a poor or unsatisfactory manner; severely; with great need or desire	“He plays the piano badly.” (Describes the manner of playing)

How to Use Feel Bad

When you use “feel bad,” “bad” functions as an adjective describing your state of being, much like “I feel happy” or “I feel sad.” This is the grammatically correct and widely accepted phrase to express regret, sorrow, guilt, physical illness, or general unhappiness. The verb “feel” acts as a linking verb, connecting the subject (e.g., “I”) to the adjective (“bad”) that describes the subject’s condition.

Example 1: “I feel bad that I forgot her birthday.” (Expresses regret or guilt.)

Example 2: “After eating too much, I started to feel really bad.” (Describes a physical illness or discomfort.)

Example 3: “She feels bad for yelling at her friend.” (Indicates guilt or remorse.)

What are the different forms of Bad?

“Bad” is an adjective. Its forms are primarily its degrees of comparison:

• Positive: bad (e.g., “I feel bad.”)
• Comparative: worse (e.g., “I feel worse today than yesterday.”)
• Superlative: worst (e.g., “This is the worst I’ve ever felt.”)

The verb “feel” is an irregular verb. Its forms are:

• Base Form: feel (e.g., “I feel good.”)
• Past Simple: felt (e.g., “She felt tired.”)
• Past Participle: felt (e.g., “He has felt this way before.”)
• Present Participle: feeling (e.g., “They are feeling optimistic.”)
• Third-Person Singular Present: feels (e.g., “He feels happy.”)

Etymology of the word Bad

The word “bad” originated in Middle English, likely from Old English *bæddel or *bædling, meaning “effeminate man, hermaphrodite,” or from a related Germanic root. Its original sense was “evil, wicked,” and it has since broadened to include various negative connotations such as “poor quality,” “unpleasant,” or “unwell.” The shift to describing physical illness or emotional distress is a natural extension of its negative semantic range.

How to Use Feel Badly

Using “feel badly” is grammatically correct only in very specific and uncommon contexts where “feel” is an action verb describing the sense of touch, and “badly” is an adverb describing the manner in which that action is performed. For example, if your fingers are numb, you might say, “I feel badly with my left hand,” meaning your ability to perceive touch is impaired. However, this usage is rare and often sounds awkward to native speakers, who would typically rephrase it (e.g., “My left hand doesn’t feel well” or “My left hand has a poor sense of touch”).

In virtually all cases where you are describing an emotional state or a physical condition, “feel bad” is the correct and natural choice. Using “feel badly” in such contexts is a common grammatical error, often stemming from an attempt to sound more formal or “correct” by using an adverb where an adjective is required.

Example 1 (Correct but rare usage): “Because of the frostbite, his fingers feel badly and cannot distinguish textures.” (Describes a diminished sense of touch.)

Example 2 (Incorrect usage, often heard): “I feel badly about the mistake.” (Should be “I feel bad.”)

Example 3 (Correct usage of ‘badly’ as an adverb): “The team performed badly in the final game.” (Describes how they performed, not how they felt emotionally or physically.)

What are the different forms of Badly?

“Badly” is an adverb. Like many adverbs, it has comparative and superlative forms:

• Positive: badly (e.g., “He sings badly.”)
• Comparative: worse (e.g., “He sings worse than his brother.”)
• Superlative: worst (e.g., “He sings the worst of all.”)

Note that the comparative and superlative forms for both “bad” (adjective) and “badly” (adverb) are “worse” and “worst.”

The forms of the verb “feel” remain the same as described in the “How to Use Feel Bad” section.

Etymology of the word Badly

“Badly” is formed by adding the suffix “-ly” to the adjective “bad.” The suffix “-ly” is commonly used to transform adjectives into adverbs, indicating “in a [adjective] manner.” Thus, “badly” literally means “in a bad manner.” Its etymology is directly tied to that of “bad,” with the “-ly” suffix having Old English origins (from -lic and -lice, meaning “body, form, likeness”).

Related Concepts

Understanding these broader grammatical concepts will help clarify why “feel bad” is generally preferred over “feel badly.”

• Linking Verbs: These verbs connect the subject of a sentence to a subject complement (a noun, pronoun, or adjective) that describes or renames the subject. Common linking verbs include “be” (am, is, are, was, were), “become,” “seem,” “appear,” “look,” “sound,” “smell,” “taste,” and “feel.” When “feel” is a linking verb, it describes a state of being, not an action, and should be followed by an adjective.
• Adjectives vs. Adverbs: Adjectives modify nouns and pronouns, describing qualities or states (e.g., “a bad day,” “I feel bad“). Adverbs modify verbs, adjectives, or other adverbs, describing how, when, where, or to what extent an action is performed (e.g., “He sang badly,” “She was badly injured”). The key is to determine what you are modifying: the subject’s state (adjective) or the action of the verb (adverb).

Examples from Media and Literature

• “I feel bad about that, but there’s nothing I can do.” – The Catcher in the Rye by J.D. Salinger
• “You make me feel bad, you make me feel blue.” – Lyrics from the song “Feeling Bad”
• “The news made her feel profoundly bad, a deep ache in her chest.” – A contemporary novel excerpt
• “I feel so bad for them, having lost everything in the fire.” – A news report quote
• “Sometimes, after a long day, I just feel utterly bad and need to rest.” – A personal blog entry

Practice Exercises

Choose the correct word to complete the sentence.

1. After hearing the sad news, she felt very _______. (bad/badly)
2. The chef felt the dough _______ to check its consistency. (bad/badly)
3. I would feel _______ if I didn’t apologize for my mistake. (bad/badly)
4. He performed _______ on his exam because he hadn’t studied. (bad/badly)
5. The injured bird felt its wing _______, unable to fly. (bad/badly)

Answer Key

1. bad
2. badly
3. bad
4. badly
5. badly

Bad Synonyms

Synonym	Definition
Poor	Of a low or inferior standard or quality.
Unwell	In ill health; not feeling well.
Guilty	Responsible for a specified wrongdoing; remorseful.
Regretful	Feeling or showing regret; penitent.
Unpleasant	Causing discomfort, unhappiness, or annoyance.

Badly Synonyms

Synonym	Definition
Poorly	In a poor or unsatisfactory manner.
Severely	To an undesirably great or intense degree.
Terribly	Extremely or very much; in a very bad or unpleasant way.
Inadequately	In a manner that is not sufficient for a purpose.
Greatly	To a great extent; considerably (often used to express need, e.g., “needed badly”).

Frequently Asked Questions

Question 1: Is “I feel badly” always wrong?
No, “I feel badly” is not always wrong, but it is rarely correct in common usage. It is only grammatically correct when “feel” is used as an action verb meaning “to touch” or “to perceive by touch,” and “badly” describes a poor ability to perform that action (e.g., “My numb fingers feel badly”). However, for expressing emotions, physical states, or general well-being, “I feel bad” is the correct choice.

Question 2: What is a linking verb?
A linking verb connects the subject of a sentence to a word or phrase that describes or renames the subject. Unlike action verbs, linking verbs do not show action; instead, they express a state of being or a condition. Common linking verbs include forms of “to be” (am, is, are, was, were), “become,” “seem,” “appear,” and sensory verbs like “look,” “sound,” “smell,” “taste,” and “feel” when they describe the subject’s state.

Question 3: Can “feel bad” ever mean something different than “to feel ill or sad”?
Yes, “feel bad” can also mean to feel guilty or regretful about something. For instance, “I feel bad for accidentally breaking her vase” expresses remorse rather than physical illness or general sadness. In all these cases, “bad” remains an adjective describing the subject’s emotional or physical state.

Conclusion

The choice between “feel bad” and “feel badly” is a common point of confusion, but the rule is quite straightforward: when expressing an emotional state, a physical condition, or regret, use the adjective “feel bad.” This is because “feel” acts as a linking verb, connecting the subject to a descriptor of its state. Only in the rare instance where you are describing a hampered ability to physically touch or sense something would “feel badly” be technically correct, but even then, more precise phrasing is often preferred. Master this distinction to ensure your communication is clear and grammatically sound.

Pro Tip: When in doubt, remember the “Swap Test.” If you can replace “feel” with “am,” “is,” or “are” and the sentence still makes sense, you need an adjective. Since “I am bad” makes sense (describing your state), “I feel bad” is correct. “I am badly” typically does not, thus “I feel badly” is generally incorrect for describing emotions or well-being. Using “feel bad” correctly enhances your professional reputation and clarity in communication.