to make (something) difficult to do or understand

confuse, make difficult

to make mistakes; do or be wrong

make a mistake; do wrong

to make wild and usually useless efforts (as when one is in deep water and unable to swim)

struggle; be in the dark

to make (progress) difficult; get in the way of (a person)

prevent, slow down

a short pull or push (up); a kind of noose or knot; a temporary difficulty

problem, difficulty

a wrong opinion, idea or act because of wrong information, lack of ability or skill etc

error, misunderstanding

(of teams, players etc with equal scores) to play a deciding match

stop, hinder

to oppose or prevent (something) successfully

stop, hinder