Having no defence or protection; open or exposed to assault or injury; vulnerable.

In predicative use. With to, †upon. Likely to suffer from or be affected by; vulnerable or exposed to.

Careless, heedless, negligent.

Defenceless, unprotected, deserted. Obsolete.

Not armed; having no armour or weapons.

shelterless, unprotected.

Exposed or open to, prone to, or liable to suffer from something damaging, deleterious, or disadvantageous.

= undefensible, adj. 2.

Incapable of defence.

That is without a defence or defences; unprotected, unguarded.

Exposed to attack; unprotected, very vulnerable; off one's guard. Frequently figurative, esp. in to leave (oneself) wide open (to something).

Not defended or guarded; unprotected.

(un-, prefix1 affix 2.)

Incapable of making defence; defenceless.

(un-, prefix1 affix 1.)

Without means of defence; defenceless.

Not protected from harm, damage, or attack; defenceless, vulnerable.

Incapable of defence. Also absol.

Not protected or covered with a screen.

Without defence or protection against attack, injury, or harm; defenceless.

Not protected or screened by another or others. (See cover, v.1 8 12.)

Having no screen (in various senses); unprotected, exposed. Also: not involving the use of a screen.

Of a person: = defenceless, adj. 1.