Added 10 October 2026 hardheartedness noun Categories: FeelingsObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about hardheartedness at Wordnik → Where our words come from → An absence of concern for the welfare of others. Related Words: heartlessnesscoldheartednesshard-heartednesshardheadednessunhardihoodstoneheartednessstonyheartednessstone-heartednessunhardinessstony-heartednesshardinessheartiness Back to today's word