Even if your not a newscaster it's better not to use a word if you don't know what it means.

I just overheard someone complaining about another persons behavior and stating "she should at least brandish him."

Thank you websters on line

Main Entry: 1bran·dish
Pronunciation: \ˈbran-dish\
Function: transitive verb
Etymology: Middle English braundisshen, from Anglo-French brandiss-, stem of brandir, from brant, braund sword, of Germanic origin; akin to Old English brand
Date: 14th century
1 : to shake or wave (as a weapon) menacingly
2 : to exhibit in an ostentatious or aggressive manner

I think the word she was looking for is admonish