Inflate
Deflate
The antonym of "inflate" is "deflate", if used to mean 'fill with air'. If 'inflate' is used as a meaning of 'exaggerate', then the antonym would be 'understate'.
ripple, deflate
The prefix you would add to "inflate" to make an antonym is "de-," resulting in "deflate." This means to decrease in size or volume.
deflate. Example: Although Sara was at first elated at her good fortune, she was emotionally deflated when it was stolen from her.
informal
No. AN antonym for deceased would be alive. An antonym for friendly would be unfriendly or hostile.
That would be to deflate it.
No. An antonym for answer would be unknown or mystery.
There would not be an antonym for equipment.
Elation would be an antonym.
An antonym for alert would be notify or inform.