Synonyms and related words :
aidless, bare-handed, defenseless, fatherless, friendless, guardless, guideless, helpless, insecure, leaderless, motherless, pregnable, unarmed, unarmored, unattended, uncovered, undefended, unfortified, unfriended, ungarrisoned, unguarded, unsafe, unscreened, unsheltered, unshielded, unsuspecting, untenable, unwarned, unwatched, vulnerable, weaponless