She is despising her ex-boyfriend for cheating on her.

Her despising of others only reveals her own insecurities.

Her despisableness was evident in the way she treated others.

She couldn't handle the despisals from her colleagues.

The despisings of others can be hurtful.

He who despiseth his neighbor is a fool.

Her despisedness was evident in the way people treated her.

I despise your behavior.

His actions were despiseworthy.