IPA: /ˈmɑːrkɪdli/
KK: /ˈmɑrkɪdli/
In a way that is easy to notice or very clear; significantly or obviously.
The temperature dropped markedly after the sun went down.
Markedly → It is formed from "mark" (from Old English *mearc*, meaning a boundary or sign) and "-ed" (indicating a past participle or state) combined with "-ly" (meaning in a manner). The word "markedly" means in a manner that is noticeable or significant, as if marked out from others.
Think of something that is 'marked' or stands out as a 'sign' — that's why 'markedly' means something is done in a noticeable way.