From ra'ah in the sense of rea'; a female associate; generally an additional one -- + another, mate, neighbour.
see HEBREW ra'ah
see HEBREW rea'
H7468. reuth
I. רְעוּת noun feminine fellow (-woman); — suffix in reciprocal phrase רְעוּתָהּ מֵאֵת אִשָּׁה Exodus 11:2 (E) each from her fellow ("" רֵעֵהוּ מֵאֵת אִישׁ, compare II. רֵעַ
3); compare Jeremiah 9:19; of birds of prey (דַיּוֺת) Isaiah 34:15 compare 34:16; people under figure of sheep Zechariah 11:9; רְעוּתָהּ Esther 1:19 = another than she (compare 1 Samuel 15:28 II. רֵעַ 2).