HackerVoca

strive : endeavor, try, struggle, toil
stroke : striking, blow, beating, beat
stroll : ramble, wander, roam, rove
strong : powerful, vigorous, mighty, potent
stubborn : obstinate, dogged, persistent, rigid, stiff, headstrong
stuff : material, substance, matter
stun : astound, daze, astonish, amaze, bewilder / verb [transitive]
to confuse someone, confound /k@n'faUnd/ verb [transitive]

1 to confuse and surprise people by being unexpected: His amazing recovery confounded the medical specialists.

2 formal to defeat an enemy, plan etc

3 formal if a problem etc confounds you, you cannot understand it or solve it: Her question completely confounded me.

4 confound it/him/them old-fashioned used to show that you are annoyed

, stupefying adjective
making you feel extremely surprised, tired, or bored: stupefying inefficiency
stupefy verb [transitive]