an attempt to deceive someone into believing something that is not true欺骗,愚弄,假装
She's not really angry - it's just a put-on.她没有真的生气,这只不过是装出来的。
put on phrasal verb ⇨gain2 (put on weight)⇨play3 (put on a play)⇨pretend (put on an American accent/a look of concern)⇨turn sth on (put the kettle on)⇨wear (put your coat on)