IPA: /ˈkwɪkənər/
KK: /ˈkwɪkənər/
A person or thing that makes something happen faster or more efficiently.
The quickener helped speed up the process of making the dough rise.
Quickener → It is formed from "quick" (from Old English *cwic*, meaning alive or lively) and "-en" (a suffix used to form verbs indicating to make or become). The word "quickener" means something that makes something else lively or faster.
Think of 'quick' meaning lively or fast, and the '-en' suffix indicating to make. A quickener is something that makes things faster or more lively.