adagio [It]—slow tempo, often implying a lyrical, poignant character
allegro [I]—fast, lively tempo. From the Italian word for cheerful or gay.
assai—very much. Intensifies the direction of its neighboring words, e.g. "allegro assai", very fast
chamber music, Kammermusik [G], musique de chambre [F], musica da camera [I], musica cameralis [L]—"Classical Music" for a small ensemble, generally 8 or fewer players with a canonical emphasis on 3-6 players. explore
lento, lent [F], lentement [F], avec lenteur [F]—slow (tempo)
misterioso [I]—mysterious, secretive, enigmatic
non—not, no
poco, un poco, poco a poco—a little bit, e.g. "andante un poco moto" is andante with a little more motion than typical. "poco a poco" means a little bit at a time, gradually.
quintet, quintette [F], quintett [G], quintetto [I]—an ensemble / work for 5 players, the typical examples being string quintet (with second viola or cello), piano quintet or woodwind quintet
tragico [I]—tragic
troppo [I], non troppo, trop [F]—too, too much. non troppo means "not too much". e.g. "Allegro ma non troppo" means fast, but not too much