opaque
UK /əʊˈpeɪk/ · US /oʊˈpeɪk/ adjective, noun, verb
Forms opaquer opaquest opaques opaquing opaqued opake
- adjective Neither reflecting nor emitting light.
- adjective Allowing little light to pass through, not translucent or transparent.
- adjective (figuratively) Unclear, unintelligible, hard to get or explain the meaning of.
- adjective (figuratively) Obtuse, stupid.
- adjective (computing) Describes a data type for which higher-level callers have no knowledge of data values or their representations; all operations are carried out by the type's defined abstract operators.
- noun (obsolete, poetic) An area of darkness; a place or region with no light.
- noun Something which is opaque rather than translucent.
- verb (transitive) To make, render (more) opaque.
Synonyms
adiaphanous nontransparent opacous opacular thick blur cloud unintelligible
Antonyms
see-through translucent transparent clear obvious oblique bright brilliant turbid
Etymology
From Middle English opake, from Latin opacus (“shaded, shady, dark”) (of unknown origin), later reinforced from Middle French opaque. Doublet of ubac.
Webster’s 1913
- adjective Impervious to the rays of light; not transparent; as, an opaque substance.
- adjective Obscure; not clear; unintelligible. [Colloq.]
- noun That which is opaque; opacity. Young.
Etymology [F., fr. L. opacus. Cf. Opacous.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “opaque”, CC BY-SA 4.0. Details