colorless

US: /ˈkʌlɚlɪs/ ,(kul′ər lis)

WordReference Random House Learner's Dictionary of American English © 2026

col•or•less /ˈkʌlɚlɪs/   adj. 

1. without color:
   [sometimes: after a noun] socks colorless from too many washings.
2. pale;
   pallid;
   dull in color:
   a colorless complexion.
3. lacking liveliness or excitement;
   dull;
   uninteresting:
   He has a colorless personality.

col•or•less•ly, adv. 
col•or•less•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2026

col•or•less  (kul′ər lis), adj. 

1. without color:
   Pure water is colorless.
2. pallid;
   dull in color:
   a colorless complexion.
3. lacking vividness or distinctive character;
   dull;
   insipid:
   a colorless description of the parade.
4. unbiased;
   neutral.

• 1350–1400; Middle English; see color, -less

col′or•less•ly, adv. 
col′or•less•ness, n. 
Synonyms

• 3. . unexciting, dreary, drab, lackluster.

Collins Concise English Dictionary © HarperCollins Publishers::

colourless, colorless / ˈkʌləlɪs/ adjective

1. without colour
2. lacking in interest: a colourless individual
3. grey or pallid in tone or hue
4. without prejudice; neutral

ˈcolourlessly, ˈcolorlessly adverb