Synonyms of defenceless

Adjective

1. defenseless, defenceless, vulnerable (vs. invulnerable)

usage: lacking protection or support; "a defenseless child"

2. defenseless, defenceless, unarmed (vs. armed)

usage: lacking weapons for self-defense

Adverb

1. defenseless, defenceless, defenselessly, defencelessly

usage: without defense; "the child was standing in the middle of the crossfire, defenselessly"