Underfill is a antonym of overfill.
As verbs the difference between overfill and underfill
is that overfill is to fill beyond capacity or beyond what is appropriate while underfill is to fill with an insufficient amount.
As a noun overfill
is an instance of overfilling.
overfill
English
Verb
(
en verb)
To fill beyond capacity or beyond what is appropriate.
Noun
(
en noun)
An instance of overfilling.
underfill
English
Verb
(
en verb)
To fill with an insufficient amount.
Antonyms
* overfill