IPA: /ˈtuːθɪli/
KK: /ˈtuːθɪli/
In a way that shows teeth or has a toothy appearance.
The dog smiled toothily, revealing its sharp teeth.
Toothily → It is formed from "tooth" (from Old English "toð", meaning a hard structure in the mouth used for biting) and the suffix "-ily" (meaning in a manner of). The word "toothily" means in a manner that relates to or resembles teeth.
Think of the word 'tooth' and remember that 'toothily' describes something done in a way that relates to teeth.