Green’s Dictionary of Slang

to become angry with someone, to get nasty; to pressurize.

1958		Time 20 Jan. 44: We weren’t quite ready to hardnose with them so early [HDAS].
1964		(con. WWII) R.L. Newhafer Last Tallyho 66: If Crowley thinks he can wipe away that day at Midway by hard-nosing my air group, he’s got another think coming [HDAS].
1990		(con. early 1950s) J. Ellroy L.A. Confidential 385: Is it Exley? Did he hardnose you?
2021		J. Ellroy Widespread Panic 180: The Hats hard-nosed Robbie Molette [...] Eddie Benson tapped the table and looked meeeaaan.