unsurprised
A close antonym would be shrinkage.
ineffective, ineffectual, unable, impuissant, Impotent
allows
enlarge
rejected.
plentiful
Current or present is the closest antonym for the word former.
probly like profitable
Joyous might be a good one
sell
Go or start or commence are antonyms of halt
The passengers sit awestruck at the magninimity of disaster in the city.