Word: underline
Part of speech: Adjective
Syllables: un
der
line
Definition: Passing under a railway line.
Morphemes:
Affix: under-
Language: en
PoS: Prefix
Meaning: Under (in any sense): insufficient, insufficiently, below what is correct; subordinate to; beneath or behind.
Affix: line
Language: en
PoS: Verb
Meaning: To form a line along.