colourless

Adjective

colourless (comparative more colourless, superlative most colourless)

1. (UK) Having little or no colour.
   • The servant to whom he put this question was a young fellow with chubby cheeks, small, dull eyes, and a round chin, covered with a colorless down.1867, Ivan Sergheïevitch Turgenef [i.e., Ivan Turgenev], chapter I, in Eugene Schuyler, transl., Fathers and Sons […], New York, N.Y.: Leypoldt and Holt, →OCLC, page 1
   • Behind him the hills are open, the sun blazes down upon fields so large as to give an unenclosed character to the landscape, the lanes are white, the hedges low and plashed, the atmosphere colourless.1891, Thomas Hardy, Tess of the d'Urbervilles, volume 1, London: James R. Osgood, McIlvaine and Co., page 14

   Synonyms:

   dull, dingy, achromatic, colorless, hueless, bland, dim, faint, lackluster, leaden

2. (UK) Water white.

   Synonyms:

   clear, waterlike, clear as crystal, crystalline, diaphanous, glassy, hyaline, hyaloid, limpid, lucid

3. (UK) Lacking in interest or variety.

   Synonyms:

   drab, dull, banal, basic, mindless, beat, blah, commonplace, bland, boring

4. (UK) Neutral in opinion or allegiance; centrist
   • They cannot, of course, assume a colourless position because they cater to the radical rank and file and would be branded renegades.1926, David Joseph Saposs, Left Wing Unionism: A Study of Radical Policies and Tactics, page 73

   Synonyms:

   moderate