-aison

Inherited from Old French -eison, -oison, inherited from Latin -ātiō. Compare the borrowed doublets -ation and -tion. Also represented more rarely as -oison (pâmoison) and -ison (guérison). Doublet of -ation.

• IPA^(key): /ɛ.zɔ̃/ ~ /e.zɔ̃/

-aison f (noun-forming suffix, plural -aisons)

1. forms feminine nouns of action from verbs

• -son, -on
• -tion