(Greek: struggle, a contest, to contend for a prize; also, to lead, set in motion, drive, conduct, guide, govern; to do, to act; by extension, pain)

(Greek: struggle, a contest [in war or in sports], to contend for a prize; physical activity, rigorous self-discipline or training)

(Latin: struggle, struggling)

(narcoleptics struggle against sleepiness all day long)