Any word or phrase that modifies a meaning of any verb, adjective,etc.empressing manner, degree, time, placr and frequency is called an adverb. Eg) gently, often, very, etc
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Kushagra Lamba answered this
a word or phrase that modifies the meaning of an adjective, verb, or other adverb, expressing manner, place, time, or degree (e.g. gently, here, now, very ). Some adverbs, for example sentence adverbs, can also be used to modify whole sentences.