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English definition of “lost”

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lost

adjective  /lɔst/ us  

lost adjective (CANNOT BE FOUND)

(of a person) unable to find your way, or (of an item) not to be found: a lost child/pet/earring We got lost on the way home. fig. I’d be lost without you (= I would not know what to do).

lost adjective (CONFUSED)

confused, or not able to understand or appreciate: His explanation was so complicated, I got lost after the first example. Everyone else thought it was funny, but that joke was lost on me.

lost

 /lɔst/ us  

lost (LOSE)

past simple and past participle of lose
(Definition of lost from the Cambridge Academic Content Dictionary © Cambridge University Press)
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