IPA: /ˈspɛrɪŋ/
KK: /ˈspɛrɪŋ/
Limited in amount or quantity; using only what is necessary and not more.
She was sparing with her compliments, only giving them when she truly meant it.
Sparing → It is formed from "sparing" (from Old English "spearcian", meaning to save or be frugal) and the suffix "-ing" (indicating the action or process). The word "sparing" means the action of being frugal or saving resources.
Think of being careful and 'saving' ('spearcian') what you have — that's why sparing means to be frugal.