separate: [15] Etymologically, separate means ‘arrange apart’. It comes from the past participle of Latin sēparāre, a compound verb formed from the prefix sē- ‘apart’ and parāre ‘arrange (in advance), furnish, make ready’ (source also of English prepare). Sever is essentially the same word as separate, in reduced form. => prepare, sever[separate etymology, separate origin, 英语词源]