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Definition of Greatly
1. Adverb. To an extraordinary extent or degree. "He improved greatly" 
Partainyms: Great
Definition of Greatly
1. adv. In a great degree; much.
Definition of Greatly
1. in a great manner [adv]
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1. Adverb. To an extraordinary extent or degree. "He improved greatly" 
1. adv. In a great degree; much.
1. in a great manner [adv]