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Synonyms for Unimportant (same or very similar meaning)

WordNet sense 1 (of little substance or significance):
trivial

WordNet sense 2 (having little importance):
light

WordNet sense 3 (too small to make a significant difference):
inappreciable

WordNet sense 4 (not important or noteworthy):
insignificant

WordNet sense 5 ((informal) small and of little importance):
little, petty

WordNet sense 6 ((often followed by `to') lacking importance; not mattering one way or the other):
immaterial, indifferent

WordNet sense 7 (lacking worth or importance):
inconsequential, inconsequent


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