PREFIX
(加在以字母r開頭的單詞前構成反義詞)表示“不”,“非”
Ir- is added to words that begin with the letter 'r' to form words with the opposite meaning.
例句
His behaviour was becoming increasingly irrational.
他的行為變得越來越不理智了。
...its mixture of satirical wit, irreverence and spontaneity.
它融諷刺、機智、不敬、率真于一體