Definition of deposing:
(v) :
(transitive) To remove (a leader) from (high) office without killing (them).
(v) :
(law, intransitive) To give evidence or testimony, especially in response to interrogation during a deposition.
(v) :
(law, transitive) To interrogate and elicit testimony from during a deposition, typically by a lawyer.
(v) :
To testify; to bear witness; to claim; to assert; to affirm.
(v) :
(literally, transitive) To put down; to lay down; to deposit; to lay aside; to put away.
(v) :
(intransitive) To take or swear an oath.