Action or form of speech deliberately intended to be rude; (countable) a particular act or statement having this effect.
Preſent we meet thy ſneaking treacherous ſmiles;
The harmleſs abſent ſtill thy ſneer reviles;
Such as in thee all parts ſuperior find,
The ſneer that marks the fool and knave combin'd;
When melting pity would afford relief
The ruthleſs ſneer that insult adds to grief.
[...] I will, however, enjoin you / Never to submit tamely to insults from any one! for, although I strongly urge you to show every possible respect and deference to all who are your superiors, as indeed due to them, I wish you to remember that, should they return you insults for such consistent conduct, it will be manly in you, after having given them a chance, by your calm and dignified remonstrance, to repair the injury, to resent the (by such an omission) enlarged offence, for thereupon no one can blame you if you firmly persevere in your efforts to obtain reparation.