To become/get married to.
To accept, support, or take on as one’s own (an idea or a cause).
To set out the meaning of; to explain or discuss at length
To make a statement, especially at length.
“He expounded often on the dangers of the imperial presidency.”
adopt or support (a cause, belief, or way of life)
“she espoused the causes of justice and freedom for all”
“Edward had espoused the lady Grey”
(of a woman) be engaged to (a particular man)
“a virgin espoused to a man whose name was Joseph”
“she was secretly espoused to his son, Peter”
present and explain (a theory or idea) in detail
“he was expounding a powerful argument”
“he declined to expound on his decision”
explain the meaning of (a literary or doctrinal work)
“the abbess expounded the scriptures to her nuns”