Overinflation is an antonym of underinflation.
As nouns the difference between overinflation and underinflation
is that overinflation is excessive inflation (of vehicle tyres) while underinflation is inadequate inflation (of vehicle tyres).
overinflation
English
Noun
(-)
Excessive inflation (of vehicle tyres).
Antonyms
* underinflation underinflation
English
Noun
(-)
Inadequate inflation (of vehicle tyres).
Antonyms
* overinflation