deep

in music terminology, a deep sounding kick drum or bass instrument has a strong, low fundamental and a lot of "bass energy."

that kick is fucking deep. shit.

Hissy

used to describe a "noiselike" or almost "hisslike" sound or quality.

that hihat sounds a bit hissy, maybe cut back on the high frequencies a bit.

retarded

a word that is most often used by "retarded" ableists to put someone down and probably commit murder if society did not do something about it.

this idiot loves to call people names when he doesn't even have a clue what it means or its societal function. retarded.

nasal

In this case, defining a characteristic of certain sounds as having a "nasal" quality. for example, a person's voice will be more nasal if the larynx is high, or if they naturally talk through their nose.

also, certain instruments can also have a rather "pinched" or "nasal" tone to them, for instance the oboe or the clarinet.

she belted out a high "A" but because of problems with her breathing technique, the sound came out sounding more nasal than usual.

breathy

full of a light tone, used to describe the higher instruments of the orchestra for their light atmosphere and brilliance.

the upper frequencies of the cello are quite breathy.