sa lə sih zəm
noun
a gross violation of convention in grammar, etiquette, or the like; impropriety.
“There is many a man, moving in good society, who would rather be guilty of, and even detected in, an act of unkindness or mendacity, than be seen in an unfashionable dress or commit a grammatical solecism or a broach of social etiquette. Vulgarity to such men is a worse reproach than hardness of heart or indifferent morality.”