Definition of prosaical in US English:

prosaical

adjective

  • Characteristic or suggestive of prose as opposed to poetry; (hence) unpoetic, unromantic, dull, commonplace.

Origin

Late 16th century (in an earlier sense). From post-classical Latin prosaicus prosaic + -al.

Pronunciation

prosaical

/prə(ʊ)ˈzeɪɪkl/