THESAURUS
overwork
burden, busy, carry too far, do double duty, drive, elucubrate, exaggerate, exhaust, fag, go overboard, go to extremes, go too far, hit the ball, hustle, keep busy, know no bounds, lucubrate, oppress, overact, overburden, overcarry, overcarrying, overdevelop, overdo, overdoing, overdrive, overelaborate, overemphasis, overemphasize, overexercise, overexert, overexertion, overexpend, overexpenditure, overimportance, overindulge, overlabor, overload, overplay, overreaching, overreact, overreaction, overspend, overstrain, overstress, overstudy, overtask, overtax, overtaxing, overtrain, overuse, pass all bounds, pour it on, protest too much, scratch, slave, strain, supererogation, sweat, task, tax, work, work hard, work late, work overtime
ROGET THESAURUS
overwork
Fatigue
VB
be fatigued, yawn, droop, sink, flag, lose breath, lose wind, gasp, pant, puff, blow, drop, swoon, faint, succumb, fatigue, tire, weary, irk, flag, jade, harass, exhaust, knock up, wear out, prostrate, tax, task, strain, overtask,
overwork, overburden, overtax, overstrain.