A barbarism may be in one word; a solecism must be
of more. --Johnson.
2. Any inconsistency, unfitness, absurdity, or impropriety,
as in deeds or manners.
C[ae]sar, by dismissing his guards and retaining his
power, committed a dangerous solecism in politics.
--C.
Middleton.
The idea of having committed the slightest solecism
in politeness was agony to him. --Sir W.
Scott.
Syn: Barbarism; impropriety; absurdity.