suppletion（n.）
early 14c., supplecioun, "supplementation," a sense now obsolete, from Old French suppletion, from Late Latin suppletionem (nominative suppletio), noun of action from past-participle stem of supplere "fill up, make full" (see supply (v.)).
In linguistics, by 1933 as "replacement of a form in a grammatical paradigm by a form from a different root (go/went, good/better, etc.)
该词起源时间：14世纪初