Definition of unpremeditation in US English:

unpremeditation

noun

  • The quality of being unpremeditated; absence of premeditation.

Origin

Early 19th century; earliest use found in Annual Review and History of Literature. From un- + premeditation, probably after unpremeditated.

Pronunciation

unpremeditation

/ˌʌnprɪˌmɛdɪˈteɪʃn/