Word: underfill
Part of speech: Verb
Syllables: un
der
fill
Definition: To fill with an insufficient amount.
Morphemes:
Affix: under-
Language: en
PoS: Prefix
Meaning: Under (in any sense): insufficient, insufficiently, below what is correct; subordinate to; beneath or behind.
Affix: fill
Language: en
PoS: Noun
Meaning: A sufficient or more than sufficient amount.