Английский Этимологический словарь - recluse (n.)

- 12c., "person shut up from the world for purposes of religious meditation," from O.Fr. reclus (fem. recluse), noun use of reclus (adj.) "shut up," from L.L. reclusus, pp. of recludere "to shut up, enclose," from L. re-, intensive prefix + claudere "to shut" (see close). Reclusive first recorded 1599.