ad libitum (ad lib.)
at choice, meaning the passage may be played freely
adagietto
rather slow, but faster than adagio
agitato
agitated
alla breve
with a minim beat, equivaltent to 2/2, implying a faster tempo than the note values might otherwise suggest
amore
love
amoroso
loving
anima
soul, spirit
animando
becoming more lively
animato
animated, lively
ben
well
brio
vigour
comodo
convenient
con
with
con anima
with feeling, spirited
con brio
with vigour, lively
deciso
with determination
delicato
delicate
energico
energetic
forza
force
largamente
broadly
leggiero
light, nimble
marcato (marc.)
emphatic, accented
marziale
in a military style
mesto
sad