Sardonic – Unkind humour; grimly mocking or cynical
The sardine tonic (sardonic) was meant to be a joke but instead, it was very unkind.
Examples of sardonic in a sentence
He looked at her with sardonic amusement.
After Rick was fired from the restaurant, he wrote a sardonic review of the eatery.
The criminal had a sardonic smile on his face when he shot at the police officer.