allegro

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

An expressive mark indicating that a passage is to be played in a lively or happy manner, not necessarily quickly.

A passage having this mark.

And what mean these outbursts and objurgations of his, you will ask; these suggestions, furtive, rhapsodical, mystical; this furibund allegro about Money, Mediums, and Bohemia; [...]

played in a quick, lively tempo

in a quick and lively manner