In Hebrew: 'Disturbance'

הַפְרָעָה If you already know some Hebrew, you may be familiar with the word for to disturb -לְהַפְרִיעַ, an active-causative הִפְעִיל verb.

For example:

מוֹרֶה: לֹא לְהַפְרִיעַ בַּשִּׁעוּר! Teacher (a male): Do not disturb (during the) class! The noun form of להפריע, a disturbance, is הַפְרָעָה. And הפרעה is also the word for disorder, such as in the Hebrew term for ADHD (Attention Deficit / Hyperactivity Disorder) - הַפְרַעַת קֶשֶׁב וְרִכּוּז (literally, Disorder of Attention and Concentration).

To call someone disturbed, you'd use מֻפְרָעfor a male and מֻפְרַעַתfor a female. מופרע and מופרעת derive from the passive-causative הֻפְעַל verb form.

For example:

מְבַצֵּעַ הַטֶּבַח בַּבַּנְק בִּבְאֵר שֶׁבַע הָיָה אָדָם מֻפְרָע. The perpetrator of the massacre at the bank in Beer Sheba was a disturbed person. Visit Ktzat Ivrit.