Other spellings (UK) colourless Word parts color + -less Pronunciation (UK) IPA (key): /ˈkʌlə(r).ləs/ SAMPA: /"kVl@(r).l@s/ Audio (US)(file) Hyphenation: col‧or‧less Adjective Positive colorless Comparative more colorless Superlative most colorless Something that has no color, and is almost invisible Air is colorless, which is why we can see through it. Water is normally a colorless liquid.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads