Meaning of the word "put on the dog" in English

What does "put on the dog" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

put on the dog

US /pʊt ɑn ðə dɔɡ/
UK /pʊt ɒn ðə dɒɡ/
"put on the dog" picture

Idiom

to make a show of wealth, importance, or superiority; to behave ostentatiously

Example:
Whenever her rich aunt visits, she likes to put on the dog by wearing all her expensive jewelry.
He always tries to put on the dog when he's around new people, but it's clear he's not as wealthy as he pretends.