Definitionenregional note: in AM, use colorless
Something that is colourless has no colour at all. ⇒ ...a colourless, almost odourless liquid with a sharp, sweetish taste.
2. adjective [usu v-link ADJ] If someone's face is colourless, it is very pale, usually because they are frightened, shocked, or ill. ⇒ Her face was colourless, and she was shaking. ⇒ His complexion was colorless and he hadn't shaved. 3. graded adjective & adjective [usu ADJ n] Colourless people or places are dull and uninteresting. ⇒ ...the much more experienced but colourless General. ⇒ We hurried through the colourless little town set on the fast-flowing Nyakchu.
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