Word: underburn
Part of speech: Verb
Syllables: un
der
burn
Definition: To burn up; use up (energy)
Morphemes:
Affix: under-
Language: en
PoS: Prefix
Meaning: Under (in any sense): insufficient, insufficiently, below what is correct; subordinate to; beneath or behind.
Affix: burn
Language: en
PoS: Verb
Meaning: To make or produce by the application of fire or burning heat.