Allegro means...
fast.
Ritardando means...
to slow down.
pointed, separate, and light.
Tempo markings are written...
below the staff.
Morendo means...
dying away (get slower, get softer).
Adagio means...
slow.
Accelerando means...
to accelerate tempo.
An accent means...
heavy (at the beginning of the note) and sharp.
Leggiero means...
lightly.
Allargando means...
to get broader/larger (get slower, get louder).
Andante means...
walking speed.
Adagietto means...
A little less slow.
Marcato means...
all parts of the note (beginning, middle, and end) are heavy making the overall note feel very heavy.
Fortissimo means...
a little more strong/loud.
A breath mark is indicated by...
an apostrophe.
Largo means...
very slow.
Tempo markings are written...
above the staff.
Legato is indicated by...
a slur marking or the written word under the staff.
Dolce means...
sweetly.
A grand pause is indicated by...
a fermata over a whole rest.
Lento means...
Lentissimo means...
A little more very, very slow.
Tenuto means...
...medium weight in the middle of the note.
Cantabile means...
in a singing style.
Forte, while associated with loud in terms of musical dynamics, is better defined as meaning:
Strong