defenseless

sitting duck

defensive preparations against military threats / preparations for natural disasters

fortify, prepare to defend against enemies or natural disasters

(Internet) reply; response (to an electronic message)

(Internet) to reply; to respond

(colloquial) -less

(euphemistic) sexless, having no sexual activity for a long time (between a married couple)

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend