Suppletion

/sˈʌpəlʃən/

Suppletion

the phenomenon in which an irregular form of a word, often a verb or adjective, is used instead of a regular form to express a different grammatical feature

Examples

1. So that is negative suppletion.

2. I'm going to use a sign for suppletion.

3. so you see this language change to more suppletion.

4. And the definition of suppletion I think I have expanded a little bit.