/ ˈtrɪviəl; NAmE / adjective
not important or serious; not worth considering :
a trivial detail
I know it sounds trivial , but I'm worried about it.
I'll try to fix it—but it's not trivial (= it may be difficult to fix) .
► trivi·al·ly / -iəli; NAmE / adverb
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WORD ORIGIN
late Middle English : from medieval Latin trivialis , from Latin trivium place where three roads meet.