"allegro" in the noun sense
1. allegro
a brisk and lively tempo
2. allegro
a musical composition or musical passage to be performed quickly in a brisk lively manner
"allegro" in the adjective sense
1. allegro
of tempo) fast
"allegro" in the adverb sense
1. allegro
in a quick and lively tempo
"play this section allegro"
Source: WordNet® (An amazing lexical database of English)
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