unnecessary
6 synonyms and 4 antonyms for unnecessary, grouped by meaning and by how common each one is.
Adjective — Not needed; more than is required.
Synonyms
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use unnecessary
The word patterns that sound natural to a native speaker.
Etymology
From un- + necessary.
Full origin of unnecessary →Frequently asked questions
What does “unnecessary” mean?
The word “unnecessary” means not needed; more than is required. In plain terms, not needed — something you could do without.
How do you pronounce “unnecessary”?
“Unnecessary” is pronounced uhn-NEHS-uh-srih (/ʌnˈnɛs.əˌsɛɹ.i/ in IPA).
How do you use “unnecessary” in a sentence?
Here is “unnecessary” used in a sentence: “The doctor said the surgery was unnecessary and recommended physical therapy instead.”
What is the opposite of “unnecessary”?
The opposite of “unnecessary” — its antonyms — are necessary, needed, required and mandatory.
What part of speech is “unnecessary”?
“Unnecessary” is an adjective.
Is “unnecessary” a common word?
“Unnecessary” is a fairly common word in modern English, usually learned at around the A2 level.
What is the difference between unnecessary and needless?
Both unnecessary and needless describe something that is not required, but needless often carries a stronger sense of avoidable harm or waste, as in "needless suffering." Unnecessary is the more neutral, everyday choice for anything that is simply more than is required.
When should you use unnecessary instead of optional?
Use unnecessary when something is not needed at all, and optional when something is a genuine choice that may still be worthwhile. Calling a step unnecessary suggests it can be dropped without loss, whereas optional simply means it is not mandatory.
Is it correct to say 'not unnecessary'?
"Not unnecessary" is grammatically correct but is a double negative that means the same as "necessary," usually in a cautious or understated way. For clarity, most writers prefer to say something is necessary or needed rather than not unnecessary.
What is the difference between unnecessary and unnecessarily?
Unnecessary is an adjective that describes a thing, as in "an unnecessary delay," while unnecessarily is the adverb form that describes an action or degree, as in "the process was unnecessarily slow." Choose unnecessary before a noun and unnecessarily before a verb or another adjective.