Definition of unpreventive in US English:

unpreventive

adjective

rare
  • That does not prevent the occurrence of something; not preventive.

Origin

Mid 17th century; earliest use found in Edward Waterhouse (1619–1670), heraldic writer. From un- + preventive.

Pronunciation

unpreventive

/ˌʌnprɪˈvɛntɪv/