Synonyms of the word

defenceless

• adj. Without defence; undefended.

defencelessly

• adv. In a defenceless manner.

defenseless

• adj. Lacking any form of defense; vulnerable; open to attack.

defenselessly

• adv. In a defenseless manner.

unarmed

• adj. Defenceless and lacking weapons or armour.
• adj. Not carrying arms.
• adj. (biology) Not having thorns or claws etc.

vulnerable

• adj. More or most likely to be exposed to the chance of being attacked or harmed, either physically or emotionally.
• adj. (computing) More likely to be exposed to malicious programs or viruses.