Word: underdeck
Part of speech: Noun
Syllables: un
der
deck
Definition: The part of a bridge that lies beneath the deck, or surface.
Morphemes:
Affix: under-
Language: en
PoS: Prefix
Meaning: Under (in any sense): insufficient, insufficiently, below what is correct; subordinate to; beneath or behind.
Affix: deck
Language: en
PoS: Verb
Meaning: To furnish with a deck, as a vessel.