unimportant (adjective) unimportant: of no real worth, value
Sinonime: beside the point,
casual,
frivolous, frothy, immaterial,
inconsequential, inconsiderable,
indifferent,
insignificant,
irrelevant,
little, low-ranking,
meaningless,
minor,
minute,
negligible, nonessential,
nothing*,
nugatory,
null, of no account, of no consequence,
paltry,
petty, picayune, second-rate, shoestring,
slight,
trifling,
trivial,
unnecessary,
useless,
worthless,
zero*, zilch, zip
Antonime: big,
important,
relevant,
serious,
useful,
worthwhile