Definitions

1. adjective

Used to convey the opposite of its literal meaning, often for emphasis or irony.

“He described the traffic as ‘a delight’ in an antiphrastic remark about the congestion.”

2. noun

A figure of speech in which the literal meaning of a word is opposite to its intended meaning.

“The use of ‘bless you’ when someone sneezes is an example of an antiphrastic expression.”