H6209. arar
II. [עָרַר] verb strip oneself (|| form of ערה, II. עור); —
Qal Imperative עֹ֫רָה [Isa 32:11] (|| מְּשֹׁ֫טָה; according to Ges§ 110k Hi De and others masculine singular with feminine plural subject; according to Ew§ 226 a Du Di and others feminine plural, shortened from ערנה etc.).
Po`. Perfect3plural אַרְמְנוֺתֶיהָ עוֺרְרוּ [Isa 23:13] they have laid bare (the foundations of) her palaces, i.e. destroyed them; so
Pilpel Infinitive absolute +
Hithpalpel Imperfect3feminine singular תִּתְעַרְעַר עַרְעֵר [Jer 51:58] be laid utterly bare, compare ערה
Pi`el 1.