macho up

verb

macho up

verb

1

Informal To man up; to act in a tough or assertive way.

Ezra lets me have my way, yet he knows when to macho up and say I'm wrong or to simply say no.2012, Tameka L. Harvey-Cooper, No Extra Faces, page 62:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.