Definition of informous in US English:

informous

adjective

rare, poetic
  • Having no definite form, shapeless, unformed; †ugly, misshapen (obsolete).

Origin

Early 17th century; earliest use found in Philemon Holland (1552–1637), translator. Apparently from classical Latin informis inform + -ous, although in sense ‘ugly’ perhaps after post-classical Latin informosus ugly.

Pronunciation

informous

/ɪnˈfɔːməs/