Added 9 October 2026
opaque
/əʊˈpeɪk/ adjective
Latin root: opacus Wiktionary
adjective Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about opaque at Wordnik → Where our words come from →
-
Not transmitting or reflecting light or radiant energy; impenetrable to sight.
opaque windows of the jail
- Hard or impossible to understand.
Origin
From Middle English opake, from Latin opacus (“shaded, shady, dark”) (of unknown origin), later reinforced from Middle French opaque. Doublet of ubac.
From Wiktionary, via Kaikki.org (CC BY-SA)