extraneous
adjective
Definition
irrelevant or unrelated to the subject being dealt with
Synonyms
nonessential, unrelated, irrelevant
Antonyms
important, necessary, needed
Two Sentences
1.) The boy provided extraneous facts about pelicans in his marine biology presentation.
2.) "I hear too much extraneous conversation going on that does not have to do with math", the teacher yelled at her students.