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 ratify; to make valid.
To penalize (a state etc.) with sanctions.
To give official authorization or approval to; to countenance.
An approval, by an authority, generally one that makes something valid.
A penalty, punishment, or some coercive measure, intended to ensure compliance; especially one adopted by several nations, or by an international body.
A law, treaty, or contract, or a clause within a law, treaty, or contract, specifying any of the above.