[sup.ple.tion] n [ML suppletion-, suppletio act of supplementing, fr. L supplere] (1914): the occurrence of phonemically unrelated allomorphs of the same morpheme (as went as the past tense of go or better as the comparative form of good) -- sup.ple.tive adj
SUPPLETION
Meaning of SUPPLETION in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012