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something that is important has a major effect on someone or something, for example because it affects someone’s life or the way a situation develops
important, serious, large, or great
very important, necessary, or essential
something that is crucial is extremely important because it has a major effect on the result of something
essential to the existence, development, or success of something
something that is central is extremely important, and often causes something else to happen or develop
serious, useful, or important
important or powerful
to fall over forwards so that your face hits the ground or another surface
the sail behind the main sail on a ship
the activity of exploring abandoned buildings and other manmade structures
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Free thesaurus definition of important from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.