(ひにく)

ひにく
noun, na-adjective
sarcasm, irony, cynicism
1. sarcasm, irony, cynicism
A mocking or ironic remark, or the use of words to convey the opposite of their literal meaning.
He said sarcastically, 'That's wonderful.'
Please don't make such sarcastic remarks.
Her sarcasm is sharp and sometimes hurts people.
2. ironic, contrary to expectations
A situation where the outcome is contrary to what was expected, often in a cruel or unfortunate way.
Ironically, the doctor became sick.
It's ironic that the person who worked hard failed and the one who did nothing succeeded.
How ironic that the building that burned down was the fire station.

皮肉(ひにく) can function as both a noun and a na-adjective. It covers both verbal sarcasm and situational irony.

Common patterns:

The word literally combines (かわ) (skin) and (にく) (flesh/meat), suggesting something superficial or surface-level, hence the meaning of saying the opposite of what one means.