1. signifying nothing

- insignificant sounds

Similar word(s): meaningless, nonmeaningful

2. of little importance or influence or power; of minor status

- a minor, insignificant bureaucrat

Similar word(s): minor, peanut

3. devoid of importance, meaning, or force

Similar word(s): unimportant, meaningless, nonmeaningful, flimsy, fragile, slight, tenuous, thin, inappreciable, light, superficial, trivial, unimportant

4. small and unimpressive

- an insignificant sum of money

Similar word(s): little, small, dinky

Sentences with insignificant as an adjective:

- Such things are insignificant details compared to the main goal.