Out of Date vs. Out-of-Date – Which is Correct?
Both “out of date” and “out-of-date” are correct, but their placement differs. Use “out of date” after a linking verb: “The information is out of date.” Use “out-of-date” before a noun as a compound adjective: “out-of-date information.” Hyphenation prevents confusion and keeps the sentence easy to read in professional writing.
This same hyphenation principle also applies when distinguishing Up to Date from its compound form.
Out of Date or Out-of-Date – Which is Correct?
Both out of date and out-of-date are correct forms of the same adjective phrase. The main difference is grammatical position. Use out of date when the phrase comes after a linking verb such as be, seem, or become. Use out-of-date when the phrase appears directly before a noun.
For example, write “The software is out of date” because the phrase follows the verb is. Write “The company uses out-of-date software” because the phrase comes before the noun software.
The Best Trick to Remember the Difference
Use the before-noun test: if the phrase comes immediately before a noun, hyphenate it. If it comes after a linking verb, leave it open. Think of the hyphens as joining the words into one adjective that works as a single unit before a noun.
| Word | Part of Speech | Meaning | Example |
|---|---|---|---|
| out of date | Predicate adjective phrase | No longer current, useful, or accurate | The website’s information is out of date. |
| out-of-date | Attributive compound adjective | No longer current, useful, or accurate | The website contains out-of-date information. |
How to Use Out of Date
Use out of date as a predicate adjective phrase, usually after a linking verb. It describes something that is no longer current, accurate, fashionable, or suitable. This open form is common in both formal and informal English when it follows the subject and verb.
Example 1: The employee directory is out of date.
Example 2: Her knowledge of digital security has become out of date.
Example 3: The fashion magazine’s advice now seems out of date.
Etymology of the phrase out of date
The phrase combines out of, meaning beyond or outside a condition, with date, referring to the point at which something is current or valid. The expression developed the figurative meaning “no longer current” as dates became important for identifying fresh, valid, or timely information and products.
How to Use Out-of-Date
Use out-of-date as a compound adjective directly before a noun. The hyphens show that all three words function together to modify the following noun. This form is especially useful in formal, technical, and professional writing because it makes the relationship between the words immediately clear.
Example 1: The report relies on out-of-date statistics.
Example 2: We replaced the out-of-date equipment before the inspection.
Example 3: The training course contains several out-of-date recommendations.
Etymology of the compound adjective out-of-date
Out-of-date has the same historical origin and meaning as out of date. The hyphens are a later spelling convention used to connect the words when they operate together as a compound modifier before a noun. The hyphenation clarifies grammar rather than changing the phrase’s meaning.
Related Concepts
Understanding compound adjectives and predicate adjectives makes it easier to choose between the open and hyphenated forms.
- Compound adjective: A compound adjective consists of two or more words that work together to modify a noun. When out of date appears before a noun, it is commonly written out-of-date.
- Predicate adjective: A predicate adjective follows a linking verb and describes the subject. In this position, the phrase is usually written out of date without hyphens.
- Hyphenation: Hyphens can prevent ambiguity by showing that multiple words form one modifier. They are generally used before a noun but are often unnecessary after a linking verb.
- Style-guide variation: Some publishers may omit hyphens when the meaning is already clear. However, out-of-date before a noun is a clear and widely accepted choice.
Examples from Media and Literature
These examples reflect the kinds of contexts in which the two forms commonly appear in published writing:
- News reporting: A news article may state, “The agency’s records are out of date” when describing information that needs updating.
- Technology coverage: A technology review may refer to “out-of-date software” when discussing programs that no longer receive security support.
- Historical fiction: A character’s beliefs may be described as out of date when another character considers them old-fashioned.
- Business writing: A company memorandum may warn employees not to rely on out-of-date pricing information.
- Documentary commentary: A narrator may explain that a once-popular scientific theory is now out of date.
Practice Exercises
Choose the correct word or phrase to complete each sentence.
- The customer database is __________.
- The auditor found several __________ records in the archive.
- This map has become __________ after the highway was rerouted.
- The manual contains __________ safety instructions.
- That approach may seem __________ to younger employees.
Answer Key
- out of date
- out-of-date
- out of date
- out-of-date
- out of date
Out of Date Synonyms
| Synonym | Definition |
|---|---|
| outdated | No longer current or useful |
| obsolete | No longer used because something newer has replaced it |
| old-fashioned | No longer considered modern or fashionable |
| stale | No longer fresh, relevant, or original |
| superseded | Replaced by a newer or more effective version |
Out-of-Date Synonyms
| Synonym | Definition |
|---|---|
| outdated | No longer current or useful |
| obsolete | No longer used because it has been replaced |
| old-fashioned | Characteristic of an earlier time rather than the present |
| behind the times | Not keeping up with current ideas, methods, or technology |
| antiquated | Extremely old-fashioned or no longer practical |
Frequently Asked Questions
Question 1: Is “out of date” or “out-of-date” correct?
Both are correct. Use out of date after a linking verb and out-of-date before a noun.
Question 2: Is “out of date” hyphenated?
It is usually hyphenated as out-of-date when it directly modifies a noun, as in “out-of-date information.” It is usually left open after a linking verb, as in “The information is out of date.”
Question 3: Is “outdated” also correct?
Yes. Outdated is a single-word adjective with the same general meaning. For example, you can write “outdated information” or “The information is outdated.”
Question 4: Should I hyphenate “out of date” before every noun?
In careful writing, hyphenate the phrase when it functions as a compound adjective before a noun. This gives readers an immediate signal that the three words belong together.
Conclusion
Out of date and out-of-date are both correct, but their positions determine the spelling. Use the open form after a linking verb, such as “The policy is out of date.” Use the hyphenated form before a noun, such as “an out-of-date policy.” Pro tip: Consistent hyphenation makes professional writing clearer and helps protect your credibility.
