Word: therein
Part of speech: Adverb
Syllables: there
in
Definition: in that; in that place; in him/her/it.
Morphemes:
Affix: there
Language: en
PoS: Adverb
Meaning: To or into that place; thither.
Affix: in
Language: en
PoS: Adverb
Meaning: At or towards the interior of a defined space, such as a building or room.