Word: underself
Part of speech: Noun
Syllables: un
der
self
Definition: One of several conscious selves supposed to occupy the same brain, in early theories of multiple personality.
Morphemes:
Affix: under-
Language: en
PoS: Prefix
Meaning: Under (in any sense): insufficient, insufficiently, below what is correct; subordinate to; beneath or behind.
Affix: self
Language: en
PoS: Noun
Meaning: An individual person as the object of the person's own reflective consciousness (plural selves).