IPA: /ˈklɪrˌhɛdɪdli/
KK: /ˈklɪrˌhɛdɪdli/
In a way that shows clear thinking and good judgment.
She approached the problem clearheadedly, making thoughtful decisions.
Clearheadedly → It is formed from "clear" (from Old English *cleare*, meaning free from darkness or obscurity) and "headedly" (from "head" meaning the mind or intellect, combined with the adverbial suffix "-ly"). The word "clearheadedly" means to think or act in a clear and rational manner, free from confusion.
Think of being 'free from darkness' ('clear') in your 'mind' ('head') — that's how you remember that 'clearheadedly' means to think clearly.