stick up,
stand up defend against attack or criticism; "He stood up for his friend"; "She stuck up for the teacher who was accused of harassing the student"
uphold stand up for; stick up for; of causes, principles, or ideals
defend -
be on the defensive; act against an attack
assail,
attack attack someone physically or emotionally; "The mugger assaulted the woman"; "Nightmares assailed him regularly"
fight,
struggle,
contend fight against or resist strongly; "The senator said he would oppose the bill"; "Don't fight it!"
prevent,
keep stop (someone or something) from doing something or being in a certain state; "We must prevent the cancer from spreading"; "His snoring kept me from falling asleep"; "Keep the child from eating the marbles"
fight,
struggle,
contend fight against or resist strongly; "The senator said he would oppose the bill"; "Don't fight it!"
recalcitrate show strong objection or repugnance; manifest vigorous opposition or resistance; be obstinately disobedient; "The Democratic senators recalcitrated against every proposal from the Republican side"
fend,
resist,
stand try to manage without help; "The youngsters had to fend for themselves after their parents died"