(idiomatic) to grow old; to age

forgetfulness

a year

cruel / severe, terrible / very bad, terrible

(organic chemistry) aldehyde

unjust; inhuman

inhumanity

being poisoned; poisoning / (chemistry) poisoning (inhibition of catalytic behavior)

to be poisoned / (chemistry) to be poisoned (undergo inhibition of catalytic behavior)

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