defend

argue or speak in defense of

• “She supported the motion to strike”

be on the defensive; act against an attack

protect against a challenge or attack

• “Hold that position behind the trees!”
• “Hold the bridge against the enemy”

fight against or resist strongly

• “The senator said he would oppose the bill”
• “Don”

protect or fight for as a champion

be the defense counsel for someone in a trial

• “Ms. Smith will represent the defendant”

state or assert

• “He maintained his innocence”