[1] : The Collaborative International Dictionary of English v.0.48

undefended \undefended\
   see defended.
see also:
defended 

[2] : WordNet (r) 2.0

undefended
     adj : not defended or capable of being defended; "an open city";
           "open to attack" syn: assailable, undefendable, open
see also:
assailable undefendable open 

[3] : Moby Thesaurus II by Grady Ward, 1.0

19 moby thesaurus words for "undefended":
   bare-handed, defenseless, guardless, helpless, unarmed, unarmored,
   unattended, uncovered, unfortified, ungarrisoned, unguarded,
   unprotected, unscreened, unsheltered, unshielded, unsuspecting,
   unwarned, unwatched, weaponless

Undefended >> U Words
Undefended, definition of term: Undefended
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