Synonyms to penologist

jailer, advance guard, armed guard, bank guard, bull, coast guard, commandant, cordon, cordon sanitaire, custodian, gaoler, garrison, goalie, goalkeeper, goaltender, governor, guard, guarder, guardian, guardsman, inlying picket, keeper, outguard, outpost, picket, principal keeper, prison guard, rear guard, screw, security guard, train guard, turnkey, van, vanguard, warden, warder