colorless
Meaning
US standard spelling of colourless.
Concepts
colorless
colourless
pale
pallid
dull
gray
grey
lackluster
insipid
faded
lacklustre
drab
flat
achromatic
wan
vapid
dim
be dull
boring
characterless
featureless
lifeless
unexciting
uninspiring
livid
lurid
waxen
mousey
mousy
white
sallow
tame
unaccented
flaccid
lackadaisical
languid
listless
nerveless
spiritless
toneless
achromic
blanched
bland
hueless
neutral
uncolored
uncoloured
unpigmented
clear
transparent
appalling
dark
depressing
dire
disconsolate
drear
drearsome
dreich
sunless
Frequency
Etymology
From color + -less.
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Notes