From Longman Dictionary of Contemporary Englishsarcasticsar‧cas‧tic /sɑːˈkæstɪk $ sɑːr-/ ●○○ adjective MAKE FUN OFsaying things that are the opposite of what you mean, in order to make an unkind joke or to show that you are annoyed Was she being sarcastic?sarcastic remark/comment/question He can’t help making sarcastic comments.sarcastic manner/smile/laugh etc ‘I thought so, ’ she said with a sarcastic smile. —sarcastically /-kli/ adverb
Examples from the Corpussarcastic• She's kind here, not sarcastic.• The funny thing was, she had no idea that I was being sarcastic.• He will be sarcastic and they won't like it.• He was, of course, capable of being sarcastic at their expense.• Fairbrother was shuffling reluctantly out of the stone doorway as he returned, and Richard greeted him with sarcastic cheerfulness.• His story prompted a sarcastic question from Fitch, the prosecuting attorney.• The children kept coming out with sarcastic remarks like "Delicious!'' and "This is the best meal we've had in ages!''• A single insight fetched a sarcastic round of applause.• He smiled that long, slow, sarcastic smile, but he didn't retaliate.• Her eyes, beautiful and sarcastic, told that she understood exactly what was going on.• "Oh yes, that would be really easy, " she said in a sarcastic voice.sarcastic manner/smile/laugh etc• He smiled that long, slow, sarcastic smile, but he didn't retaliate.