Definition of unprecedently in US English:

unprecedently

adverb

  • Unprecedentedly.

Origin

Early 18th century; earliest use found in Laurence Echard (bap. 1672, d. 1730), historian. From un- + precedently.

Pronunciation

unprecedently

/(ˌ)ʌnˈprɛsɪd(ə)ntli/