falsetto

noun, plural fal·set·tos.

1. an unnaturally or artificially high-pitched voice or register, especially in a man.
2. a person, especially a man, who sings with such a voice.

adjective

3. of, noting, or having the quality and compass of such a voice.

adverb

4. in a falsetto.

noun plural -tos

1. a form of vocal production used by male singers to extend their range upwards beyond its natural compass by limiting the vibration of the vocal cords

n.

“an artificial voice,” 1774, Italian, diminutive of falso “false,” from Latin falsus (see false).