well adjective, adverb, noun, verb Meaning in Cambridge American English Dictionary
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Meaning of "well" - American English Dictionary

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welladjective

 us   /wel/ (comparative better, superlative best)

well adjective (HEALTHY)

healthy: I don’t feel well. I feel better now.
Idioms

welladverb

 us   /wel/

well adverb (IN A GOOD WAY)

(comparative better  /ˈbet̬·ər/ , superlative best  /best/ ) in a good way; to a high or satisfactory standard: The car was well designed. She manages people very well. I can’t sing as well as Jessica (= She sings better). His point about reducing waste is well taken (= accepted as a fair criticism). The two hours of discussion was time well spent (= it was a useful discussion). I want to congratulate you on a job well done.

well adverb (TO A GREAT DEGREE)

(comparative better  /ˈbet̬·ər/ , superlative best  /best/ ) to a great degree; much or completely: I know her well. Put in two eggs and stir well. He sent away for tickets well in advance (= very early). I knew perfectly well what time it was. I knew her pretty well when I lived in Iowa City. (comparative better  /ˈbet̬·ər/ , superlative best  /best/ ) Well is used with some prepositions and adverbs for emphasis: Keep the children well away from the edge of the pool. It costs well over $100. (comparative better  /ˈbet̬·ər/ , superlative best  /best/ ) Well is used with a few adjectives for emphasis: The museum is well worth a visit.

well adverb (REASONABLY)

[not gradable] with good reason: I couldn’t very well say no.

wellnoun [C]

 us   /wel/

well noun [C] (HOLE)

a deep hole in the ground from which water, oil, or gas can be obtained: an oil well well water

wellverb [I]

 us   /wel/

well verb [I] (COME TO SURFACE)

(of a liquid) to come to the surface or into view: As she read the letter, tears welled in her eyes. fig. He could feel the anger well up inside him.
(Definition of well adjective, adverb, noun, verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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