Definition of termagancy in US English:

termagancy

noun

  • Especially with reference to a woman: the quality or state of being bad-tempered or overbearing; violence of temper or disposition.

Origin

Early 18th century; earliest use found in Edward Ward (1667–1731), satirist. From termagant: see -ancy.

Pronunciation

termagancy

/ˈtəːməɡ(ə)nsi/