Flat

bas

(lower in pitch than it should be)

bémol

(lowered by one semitone)

crevé

(of a tyre: deflated)

dégonflé

(of a tyre: deflated)

ennuyeux

(uninteresting)

grave

(lower in pitch than it should be)

plat

(having no variations in altitude)

plat

(with its carbon dioxide having come out of solution)

plate

(uninteresting)

à plat

(of a tyre: deflated)

à plat

(unable to emit power)

pile

(with units of time, distance, etc: not exceeding)

bémol

(music: note played a semitone lower than a natural)