IPA: /sɑːrˈdɒnɪkli/
KK: /sɑrˈdɑnɪkli/
In a way that shows a lack of respect or a mocking attitude, often with a sense of irony or sarcasm.
She smiled sardonically at his attempt to apologize, clearly not believing him.
Sardonically → It is derived from 'sardonicus' (meaning bitter or scornful), which comes from the Latin 'sardonicus', itself derived from the Greek 'sardonios' (meaning of Sardinia, where a plant was said to cause a grimace). The word 'sardonically' means in a manner that is disdainfully or skeptically humorous, often with a touch of bitterness.
Think of the word 'sardonic' which relates to a bitter or scornful humor, and remember that 'sardonically' describes a way of speaking or acting that carries that same bitter humor.