Inexplicable vs. Unexplainable – Which is Correct?

Both inexplicable and unexplainable are correct adjectives in American English, meaning something cannot be explained or understood. While largely interchangeable, inexplicable often suggests a deeper, inherent mystery or lack of rational cause, whereas unexplainable is a more direct statement of an inability to explain, sometimes due to missing information.

Inexplicable or Unexplainable – Which is Correct?

Both “inexplicable” and “unexplainable” are grammatically correct and widely used adjectives, conveying the meaning that something cannot be accounted for or understood. Their difference lies primarily in nuance and common usage rather than a strict rule of correctness. “Inexplicable” often implies a deeper, more profound mystery—something inherently beyond logical reasoning or comprehension. It suggests that the phenomenon itself resists explanation. “Unexplainable,” on the other hand, is a more straightforward statement that something simply cannot be explained, which could be due to a lack of information, a complex set of circumstances, or indeed, an inherent mystery.

Think of it with a “Swap Test”: If you’re describing something that feels truly mysterious, almost supernatural, or without any discernible cause, “inexplicable” might be the stronger choice. If you’re simply stating that an explanation is currently unavailable or impossible to provide, “unexplainable” fits perfectly. For instance, an “inexplicable urge” suggests a feeling without any clear root cause, while an “unexplainable noise” simply means its source hasn’t been identified.

Word	Part of Speech	Meaning	Example
Inexplicable	Adjective	Unable to be explained or accounted for; mysterious. Often suggests an inherent resistance to explanation.	The sudden disappearance of the ancient artifact remained an inexplicable mystery.
Unexplainable	Adjective	Not able to be explained or understood. A more direct statement of the inability to explain.	The strange light in the sky was an unexplainable phenomenon to the local residents.

How to Use Inexplicable

“Inexplicable” is an adjective used to describe something that is impossible to explain or understand, often implying a deeper, inherent mystery or a lack of rational cause. It suggests that there’s no clear reason or logic behind the event, feeling, or situation. This word carries a slightly more formal and profound tone than “unexplainable,” often used when emphasizing the bewildering or puzzling nature of something.

Example 1: She felt an inexplicable sense of dread as she entered the old house, despite there being no apparent danger.

Example 2: The sudden collapse of the highly stable financial market was deemed an inexplicable event by economists.

Example 3: Despite extensive research, the origin of the ancient civilization’s advanced technology remains inexplicable.

What are the different forms of Inexplicable?

“Inexplicable” is an adjective and does not typically change form for tense or pluralization. Its related forms include:

• Adverb: Inexplicably (e.g., “The lights went out inexplicably.”)
• Noun: Inexplicability (e.g., “The inexplicability of the situation baffled everyone.”)

Etymology of the word Inexplicable

The word “inexplicable” comes from the Latin inexplicabilis, meaning “that cannot be disentangled or explained.” It is formed from the prefix in- (meaning “not”) combined with explicabilis (meaning “that can be unfolded, explained”), which itself is derived from explicare (“to unfold, unravel, explain”). Its roots highlight the idea of something that cannot be “unfolded” or made clear.

How to Use Unexplainable

“Unexplainable” is an adjective used to describe something that cannot be explained or understood. It is a direct and straightforward term that indicates a lack of explanation, whether due to insufficient information, complexity, or an inherent mystery. While often interchangeable with “inexplicable,” “unexplainable” can be used in a broader range of contexts and doesn’t always carry the same weight of profound mystery; it simply states the absence of an explanation.

Example 1: The dog’s sudden change in behavior was utterly unexplainable to its owners.

Example 2: Scientists are still researching the cause of the planet’s unexplainable magnetic field fluctuations.

Example 3: Many people attribute their lucky streaks to an unexplainable force rather than pure chance.

What are the different forms of Unexplainable?

“Unexplainable” is an adjective and does not change form for tense or pluralization. Its related forms include:

• Adverb: Unexplainably (e.g., “The child unexplainably knew the answer.”)
• Noun: Unexplainability (e.g., “The unexplainability of the phenomenon fascinated researchers.”)

Etymology of the word Unexplainable

The word “unexplainable” is formed by adding the English prefix un- (meaning “not”) to the adjective “explainable.” “Explainable” derives from the verb “explain,” which comes from the Latin explanare, a variant of explicare (“to unfold, explain”). Thus, “unexplainable” literally means “not able to be explained.”

Related Concepts

The distinction between “inexplicable” and “unexplainable” highlights the subtle nuances in English prefixes and their impact on meaning. Both words use a negative prefix (in- and un-, respectively) attached to a root related to explanation. However, the choice of prefix can sometimes subtly alter the connotation. “In-” often implies a deeper, more intrinsic impossibility or lack, making “inexplicable” suggest an inherent resistance to being explained. “Un-,” while also meaning “not,” often functions as a more direct negation or reversal, leading “unexplainable” to simply state that something cannot be explained without necessarily implying the same depth of inherent mystery. Understanding how different prefixes like in-, un-, non-, and dis- can subtly shift the meaning of a word is crucial for precise communication.

Examples from Media and Literature

• “There was an inexplicable silence in the usually bustling market square.” (Suggests a profound, unsettling quiet)
• “The detective was baffled by the series of seemingly unexplainable clues.” (Indicates that the clues currently lack an explanation)
• “He experienced an inexplicable urge to travel to a country he knew nothing about.” (Implies a feeling without any clear, logical origin)
• “The sudden, unexplainable surge in power caused a city-wide blackout.” (Refers to an event whose cause is unknown or not yet identified)
• “Her sudden change of heart was utterly inexplicable to her friends and family.” (Conveys a deep mystery surrounding her motivations)

Practice Exercises

Choose the correct word to complete the sentence.

1. The artist’s motivation for painting the same obscure symbol repeatedly remained completely __________.
2. After reviewing all the evidence, the jury found the defendant’s alibi to be ___________.
3. She felt an __________ pull towards the ancient ruins, as if they were calling to her.
4. The medical team was puzzled by the patient’s __________ recovery from a terminal illness.
5. Despite thorough investigation, the source of the strange, glowing orb was utterly __________.

Answer Key

1. inexplicable
2. unexplainable
3. inexplicable
4. unexplainable
5. unexplainable / inexplicable (both could fit, but ‘unexplainable’ is more direct for ‘source’)

Inexplicable Synonyms

Synonym	Definition
Mysterious	Difficult or impossible to understand, explain, or identify.
Puzzling	Causing confusion or bewilderment.
Enigmatic	Difficult to interpret or understand; mysterious.
Incomprehensible	Not able to be understood; unintelligible.
Baffling	Totally perplexing or confusing.

Unexplainable Synonyms

Synonym	Definition
Inexplicable	Unable to be explained or accounted for; mysterious.
Mysterious	Difficult or impossible to understand, explain, or identify.
Puzzling	Causing confusion or bewilderment.
Incomprehensible	Not able to be understood; unintelligible.
Unaccountable	Unable to be explained or justified.

Frequently Asked Questions

Question 1: Is there a situation where only one word, “inexplicable” or “unexplainable,” is correct?
No, both words are generally interchangeable in most contexts where something cannot be explained. However, “inexplicable” often carries a connotation of a deeper, inherent mystery or lack of rational cause, while “unexplainable” is a more direct statement of an inability to explain, which could be due to a lack of information.

Question 2: Does one word sound more formal than the other?
“Inexplicable” tends to sound slightly more formal or literary than “unexplainable.” It often appears in more academic or profound discussions, while “unexplainable” is common in everyday language.

Question 3: Can “inexplicable” and “unexplainable” be used interchangeably?
Yes, in many contexts, they can be used interchangeably without significantly altering the meaning. The choice often comes down to the subtle nuance you wish to convey or simply personal preference. If you want to emphasize the profound mystery, “inexplicable” might be preferred; if you’re simply stating an absence of explanation, “unexplainable” works perfectly.

Conclusion

In summary, both “inexplicable” and “unexplainable” are valid and correct adjectives in American English, used to describe something that cannot be explained or understood. While “inexplicable” often hints at a deeper, inherent mystery or a lack of rational cause, “unexplainable” is a more direct assertion that an explanation is absent. The distinction is subtle, revolving more around nuance and tone than strict grammatical rules. Both words are powerful tools for conveying the mysterious and the unknown.

Pro Tip: When writing, consider the specific shade of meaning you wish to convey. If you want to suggest something truly profound and inherently baffling, opt for “inexplicable.” If you’re simply stating that an explanation is unavailable or impossible, “unexplainable” is a clear and effective choice. Using them thoughtfully can enhance the precision and impact of your prose.