Tongue in cheek means?

The idiom “tongue in cheek” refers to expressing something in an ironic, insincere, or humorous way, often as a joke, without genuinely meaning what one says. It's a subtle form of humor or mockery where the speaker's true meaning is the opposite of their literal words, often indicated by a slight smile or a knowing glance. This makes the statement playful or sarcastic rather than serious.

“Being sarcastic” perfectly aligns with this definition. Sarcasm involves using irony to mock or convey contempt, or sometimes just to be humorous, by saying the opposite of what is literally meant.

• “To praise wholeheartedly” is incorrect because “tongue in cheek” implies insincerity or irony, not genuine, enthusiastic praise.
• “A sensational news” is incorrect as it refers to news that causes great public excitement or interest, which has no relation to the meaning of the idiom.
• “To say something hurtful” is incorrect. While sarcasm can sometimes be hurtful, the primary meaning of “tongue in cheek” emphasizes irony and humor, not necessarily an intent to cause harm. It describes the manner of speaking, not the malicious intent.