Entry 2 senses Webster, 1913 Unsparing /ən-spĕr'-ĭng/ · Un·spar·ing · IPA /ənspˈɛrɪŋ/ 01 a. Not sparing; not parsimonious; liberal; profuse. 1. Not sparing; not parsimonious; liberal; profuse. 2. Not merciful or forgiving.[R.]