Presto (ma) non troppo—a presto movement, but not too rapid.
111. There are certain terms which indicate a modification of the normal tempo of a movement, these being divided into two classes, (a) those terms which indicate in general a slower tempo, and (b) those which indicate in general a more rapid tempo. The further subdivisions of these two classes are shown below.
(a) Terms indicating a slower tempo.
1. Terms indicating a gradual retard.
Ritenente, (rit.), ritenuto (rit.), ritardando (rit.), rallentando (rall.), slentando.
2. Terms indicating a tempo which is to become definitely slower at once.
Più lento (lit. more slowly), meno mosso (lit. less movement).
3. Terms indicating a slower tempo combined with an increase in power.
Largando, allargando. These words are both derived from largo, meaning large, broad.
(For terms indicating both slower tempo and softer tone, see [page 59], [Sec. 127].)