defenseless

Someone who's defenseless is vulnerable and unprotected. Babies need to be taken care of because they're completely defenseless.

A brand new chess player is somewhat defenseless against an experienced player, and a kitten is defenseless without its mother's fierce protection. Con men sometimes target people they see as defenseless, like the very elderly. The word defenseless dates from the 16th century, combining defense, "action of guarding or protecting," from the Latin defendere, "protect," and -less, "without or lacking."

Definitions of defenseless
1

adj lacking protection or support

“a defenseless child”
Synonyms:
defenceless
vulnerable
susceptible to attack

adj having no protecting or concealing cover

Synonyms:
naked
unprotected
lacking protection or defense

adj lacking weapons for self-defense

Synonyms:
defenceless
unarmed
(used of persons or the military) not having or using arms

adv without defense

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