off-colour

adjective

not having the usual or standard color: an off-color gem.

of doubtful propriety or taste; risqué: an off-color joke.

not in one's usual health: to feel off-color.

Also, especially British, off-col·our.

Also, off-col·ored (for defs 1, 2).

Origin:
1855–60

Synonyms
2. racy, spicy, salty, earthy, blue.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Etymonline

Word Origin & History

off-color

1860, from off + color; originally used of gems; figurative extension to "of questionable taste, risqué" is Amer.Eng., 1860s.

Online Etymology Dictionary, © 2010 Douglas Harper
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00:10

Off-colour is always a great word to know.

So is quincunx. Does it mean:

a chattering or flighty, light-headed person.

an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.

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