Definition of "allegro" in English

noun

1. (music) A tempo mark directing that a passage is to be played in a quick, lively tempo, faster than allegretto but slower than presto.

2. (music, more traditionally) An expressive mark indicating that a passage is to be played in a lively or happy manner, not necessarily quickly.

3. (music) A passage having this mark.

adverb

1. (music) played in a quick, lively tempo

adjective

1. (music) in a quick and lively manner