How did Zoro beat Monet?

[Warmmedown]

How did Zoro defeat Monet without using haki? Was it due to sheer intimidation? Was his physical strength so great that it messed her up?

 

[Captain Cadaver]

He did use Haki to injure her. Making her fall below Tashigi's level at the end and not use Haki to cut her in half was him using sheer intimidation/willpower.

 

[sei'taer]

Yeah sheer intimidation. Knowing that if he had used haki she'd have been dead without being to stop it messes her up big time.