Synonyms and antonyms of Unimportance in American Thesaurus

futility (noun)

a lack of purpose, importance, or effectiveness

insignificance (noun)

the quality of not being large or important enough to be worth considering

subordination (noun)

the fact of being less important than something else

triviality (noun)

the trivial quality of something

vanishing point (noun)

the point at which something is no longer important

vanity (noun)

formal complete lack of importance or value