To believe (something is reasonable) and argue (for it); to advocate.
To be in opposition; to contest; to dispute; to vie; to quarrel; to fight.
To be in debate; to engage in discussion; to dispute; to argue.
To struggle or exert oneself to obtain or retain possession of, or to defend.
contend with: To try to cope with a difficulty or problem.
To make a vow regarding (something).
To declare publicly that one has made a vow, usually to show one's determination or to announce an act of retaliation.
To make a vow; to promise.
A solemn promise to perform some act, or behave in a specified manner, especially a promise to live and act in accordance with the rules of a religious order.
A declaration or assertion.