put on the dog

verb

(colloquial, idiomatic, dated) To dress up; to make a show of wealth and/or importance; to be pretentious.

I decided to put on the dog and wear my fanciest outfit to the party.

意味（1）

(colloquial, idiomatic, dated) To dress up; to make a show of wealth and/or importance; to be pretentious.

If she softened her natural vowels a fraction in keeping with her role as a Protestant lady, she did not put on dog or act in a snobbish manner.