Meaning of back-form in English:

back-form

Pronunciation /ˈbakfɔːm/

verb

Linguistics
  • To form (a new word) from a component element of an existing word, typically by removing an ending or suffix; to create by a process of back-formation. Often in passive, and frequently with from.

    Examples of back-formed words include the verbs emote (from emotion) and enthuse (from enthusiasm).

Origin

Early 20th century. From back- + form, after back-formation.