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English definition of “inside”

inside

adverb, preposition, adjective     /ɪnˈsaɪd/
A1 in or into a room, building, container, or something similar: "Is Anna in the garden?" "No, she's inside (= in the house)." What's inside the box? Luckily, no one was inside the building when it collapsed.figurative She couldn't cope with the grief she felt inside.figurative Who can tell what goes on inside his head? He put the documents carefully in his inside pocket (= pocket on the inside of a jacket or coat).In and at inside out B2 If something is inside out, it has the usual inside part on the outside and the usual outside part on the inside: She had her jumper on inside out.In and atFrom, out and outside Grammar:InsideInside is an adjective, noun, adverb or preposition. We use inside when we refer to the inner part of something.See more
(Definition of inside adverbprepositionadjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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