extraneous applies to what is on or comes from the outside and may or may not be capable of becoming an essential part.

EXTRANEOUS definition: introduced or coming from without; not belonging or proper to a thing; external; foreign. See examples of extraneous used in a sentence.

Definition of extraneous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

EXTRANEOUS definition: 1. not directly connected with or related to something: 2. not directly connected with or related…. Learn more.

1. introduced or coming from without; not forming an essential or proper part: extraneous substances in our water. 2. not pertinent; irrelevant: an extraneous remark.

Extraneous means coming from the outside, like the extraneous noise you hear when you're in a theater and a train passes by. Extraneous can also mean not relevant or essential, like all the …

Extraneous things are not relevant or essential to the situation you are involved in or the subject you are talking about.

Feb 10, 2026 · Adjective extraneous (not comparable) Not belonging to, or dependent upon, a thing; without or beyond a thing; foreign.

WordReference Random House Learner's Dictionary of American English © 2025 ex•tra•ne•ous /ɪkˈstreɪniəs/ adj. introduced or coming from without or outside: extraneous substances in our water. …

Extraneous refers to something that is irrelevant or unrelated to the subject or matter at hand. It often describes information, details, or objects that serve no purpose and can be removed or ignored …