Added 9 October 2026 knee-high /ˌniːˈhaɪ/ noun Categories: Things noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about knee-high at Wordnik → Where our words come from → A sock or stocking that reaches up to just below the knees. adverb Up to the knees. we were standing knee-deep in the water Origin From knee + high (adjective). From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: knee-deepoverkneethigh-highunderkneemidcalfmidheightneckdeepsemihighdeepinfrapatellarpostpatellarprepatellar Back to today's word