Word: underseas
Part of speech: Adverb
Syllables: un
der
seas
Definition: Under the surface of the sea or ocean, underwater.
Morphemes:
Affix: under-
Language: en
PoS: Prefix
Meaning: Under (in any sense): insufficient, insufficiently, below what is correct; subordinate to; beneath or behind.
Affix: sea
Language: en
PoS: Noun
Meaning: The ocean; the continuous body of salt water covering a majority of the Earth's surface.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used in the formation of certain English adverbs.