Lacking animation, variety, or distinction; dull. See Synonyms at dull.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "colorless" in a sentence
"We know Adam Smith as we know the ancients, in colorless stone."
"Color or colorless, that is the question by Steve Windisch (jibbguy) on Tuesday, Nov 18, 2008 at 2: 51: 56 PM"
"You know, natural gas is odorless and colorless, which is why they add this mercaptan."