IPA: /ˌædʌmˈbreɪtɪvli/
KK: /ædʌmbrəˌtɪvli/
In a way that outlines or suggests something without giving full details.
The author adumbratively hinted at the plot twist without revealing too much.
Adumbratively is formed from "adumbrate" (from Latin "adumbratus", meaning to overshadow or to give a faint outline) and the suffix "-ively" (meaning in a manner). The word describes something that is done in a way that gives a faint or shadowy outline of something, often implying a vague or incomplete representation.
Think of 'adumbrate' as giving a 'faint outline' of something, and the '-ively' means it's done in that manner. So, adumbratively means doing something in a way that only hints at the full picture.