back-formed
adjEtymology First attested in 1911 (adjective sense 1).
1
Formed by back-formation.
- To coin an example from this very word [sc. backformation], we might use the phrase, «such and such a word is back-formed from etc.»1911, Vilhelm Bladin, “X. ‘Back-formed’ denominatives”, in Studies on Denominative Verbs in English: Inaugural Dissertation, quoted in OED, page 52: