lot - definition and synonyms

adverb, pronoun 

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A lot can be used in the following ways:
as an adverb: He seems to like her a lot. (before a comparative adjective or adverb): I feel a lot better.
as a pronoun: We didn’t get paid a lot, but we had fun. (followed by ‘of’): A lot of people don’t like the idea much.
Lots can be used in the same way as a lot but is more informal: She knows lots about it.There’s lots to eat in the kitchen.