IPA: /ˈspɛrli/
KK: /spɛrli/
In a way that is simple and not filled with extra things; showing only what is necessary.
The room was decorated sparely, with just a few pieces of furniture.
Sparely → It is formed from "spare" (from Old French *espargnier*, meaning to save or economize) and the adverbial suffix "-ly" (meaning in a manner of). The word "sparely" means in a manner that is economical or not excessive.
Think of being economical or saving resources ('spare') and doing it in a certain way ('-ly'). This helps you remember that 'sparely' means doing something in a way that is not excessive.