Definition of "suppletive" []

• Inflected by substituting an unrelated form (for example, in English, the adjectival forms good, better, best). (adjective)
• Supplying deficiencies; supplementary; suppletory. (adjective)

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• "According to this theory, the PIE s-aorist was originally a specially inflected type of root aorist in which the 3 sg. active form, for reasons now lost within the prehistory of PIE, was built from a suppletive sigmatic stem with 'Narten' *ē : *e ablaut."
• "I'm going to now assert the following premise for the sake of discussion: PIE *itself* still retained a subjective-objective contrast and this is what lies behind the suppletive *mi- and *h₂e conjugations."
• "For example, if we ponder on the suppletive declension of *so-/*to- "that", we notice that *so never receives case endings and is only ever used in the animate nominative while *to- is used everwhere else i.e. for the inanimate and all other cases other than nominative for all genders."