Answer:
kissed
it shows sight touching
a) nice and kind
shut and close
Happy and jolly
hope and wish
cold and chilly
pair and couple
boat and ship
c)short
over
stiff
Easy
selfish
slowly
Inflate
worthless
indefinite
inferior
"amyl nitrite" is one term, while "popper" is more of a slang term, so i believe the answer is "poppers".
