Wordnet 3.0
ADJECTIVE (1)
1.
lacking protection or defense;
The Collaborative International Dictionary of English v.0.48:
Unprotected \Unprotected\
See protected.
WordNet (r) 3.0 (2006):
unprotected
adj 1: lacking protection or defense [ant: protected]
Moby Thesaurus II by Grady Ward, 1.0:
31 Moby Thesaurus words for "unprotected":
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