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not important or relevant
not very important in comparison with people or things of the same type
not important or not relevant to what you are discussing or doing
without any clear purpose or importance
not important and not worth worrying about
ignored, or unimportant
not important or not having a serious effect
not important in any way/not very important
not very important or difficult
a start-up … whose value has reached more than one billion US dollars
an object that floats on water to show ships where it is safe and where there is danger
an afternoon full of crafts
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Free thesaurus definition of unimportant from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.