Solecism \Sol”e*cism\, n.[F. sol[‘e]cisme, L. soloecismus, Gr.
soloikismo`s, fr. soloiki`zein to speak or write incorrectly,
fr. so`loikos speaking incorrectly, from the corruption of
the Attic dialect among the Athenian colonists of So`loi in
1. An impropriety or incongruity of language in the
combination of words or parts of a sentence; esp.,
deviation from the idiom of a language or from the rules
of syntax.
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.
The idea of having committed the slightest solecism
in politeness was agony to him. –Sir W.
Syn: Barbarism; impropriety; absurdity.

Be nice with what you write.