Grave
very slow
Lento
slowly
Largo
broadly
Adagio
slow and stately (literally, "at ease")
Adagietto
slower than andante
Andantino
slightly slower than andante (although in some cases it can be taken to mean slightly faster than andante)
Andante
at a walking pace
Andante moderato
between andante and moderato (thus the name andante moderato)
Marcia moderato
moderately, in the manner of a march
Moderato
moderately
Allegro Moderato
moderately fast
Allegretto
close to but not quite allegro
Allegro
fast, quickly, and bright
Vivace
lively and fast
Presto
extremely fast
Prestissimo
even faster than presto
Accelerando
speeding up
Allargando
growing broader; decreasing tempo, usually near the end of a piece
Calando
going slower (and usually also softer)
Meno mosso
less movement or slower
Mosso
movement, more lively, or quicker, much like più mosso, but not as extreme
Più mosso
more movement or faster
Precipitando
hurrying, going faster/forward
Rallentando
gradual slowing down
Ritardando
slowing down gradually; also see rallentando and ritenuto
Ritenuto
slightly slower; temporarily holding back.
Rubato
free adjustment of tempo for expressive purposes
Stringendo
pressing on faster
A tempo
at the same speed as the beginning
L’istesso tempo
at the same tempo as before
Tempo primo
same tempo as original tempo
alla
in the manner or style of
assai
very much, as in allegro assai, quite fast
con
with
con brio
with vigor and spirit
con dolcezza
with softness; delicately
con fuoco
with fire
con moto
with motion
meno
less
misterioso
mysterious
molto
much, very, example
non troppo
not too much
più
more, as in più allegro (more quickly); used as a relative indication when the tempo changes
poco
slightly, little, as in Poco adagio
poco a poco
little by little
senza
without
sostenuto
sustained, prolonged
subito
suddenly
tutta forza
full power and force
vivo
with life and vigor
agitato
agitated, with implied quickness
appassionato
to play passionately
Animato
animatedly, lively
Brillante
sparkling, glittering
Cantabile
in singing style (lyrical and flowing)
Calando
dying away, slowing, diminishing
Dolce
sweetly
Energico
energetic, strong, forceful
Espressivo
expressively
Furioso
to play in an angry or furious manner
Giocoso
merrily, funny
Grazioso
gracefully
Lacrimoso
tearfully, sadly
Lamentoso
lamenting, mournfully
Leggiero
to play lightly, or with light touch
Maestoso
majestic or stately (which generally indicates a solemn, slow march-like movement)
Marcato
marching tempo, marked with emphasis
Misterioso
mystical, in a shady manner
Morendo
dying
Pesante
heavily
Saltando
jumpy, fast, and short
Scherzando
playfully
Tranquillo
peacefully
pianississimo
extremely soft
pianissimo
very soft
piano
soft
mezzo-piano
medium soft
mezzo-forte
medium loud
forte
loud
fortissimo
very loud
fortississimo
extremely loud
crescendo
gradual increase in volume
decrescendo
gradual decrease in volume
sforzando
literally “forced”, denotes an abrupt fierce accent on a single sound or chord.