Crescendo
Gradually becoming louder
Decrescendo/Diminuendo
Gradually becoming softer
Sforzando
Suddenly or strongly accented
Staccato
Short and detached
Pizzicato
Where a stringed instrument is to be plucked
Arco
Where a stringed instrument is to be played with the bow (used after pizzicato)
Tremolo
The rapid repetition of one or two notes produced by a bow on a string instrument
Rallentando
Gradually becoming slower
Ritardando
Gradually becoming slower
Ritenuto
Held back (ie. immediately slower)
Legato
Smoothly or well connected