freshen, refresh, refreshen

tiredness, exhaustion, sleepiness, jet lag, weariness, sleeplessness, dizziness, jetlag, discomfort, drowsiness, lethargy, cramps, stiffness, disorientation, burnout, boredom, dehydration, soreness, lightheadedness, acrophobia, numbness, listlessness, rustiness, vertigo, exertion, nausea, sickness, seasickness, grogginess, forgetfulness, tenseness, heat exhaustion, sweatiness, aches, symptoms, wooziness, inexperience, heat prostration, irritability, anxiety, achy, jitteriness, sluggishness, insomnia, headaches, stress, fatigability, fogginess, breathlessness, nerves, overexertion, diaphoresis, motion sickness, laziness, immobility, crankiness, overwork, hangover, indigestion, frailty, sweating, fidgetiness, staleness, backache, polyuria, inattention, anxiousness, altitude sickness, hypoxemia, overexcitement, shortness, fever, overconfidence, tendonitis, claudication, spinal curvature, stamina, itis, endurance, pain, incoordination, apathy, tiring, restlessness, stage fright, irritation, nervousness, sleep apnea, inattentiveness, clamminess, airsickness, shin splints, physical exertion, myotonia, paraesthesia, rust, lumbago, sore throat, rhinorrhea, heatstroke, inactivity, paresthesia, debility, prostration, crowding, discouragement, dryness, frustration, hardship, attrition, creep, rupture, corrosion, tensile, thermomechanical, tribological, compressive, multiaxial, quasistatic, frictional, biaxial, flexural, rheological, compression, hydrodynamic, relaxation, aerodynamic, dynamic, overload

asthenopia, beat, conk out, exhaust, exhaustion, eyestrain, grogginess, jet lag, logginess, loginess, overfatigue, overtire, overweary, peter out, poop out, retire, run down, run out, tucker, tucker out, withdraw

break down, carcinomatous myopathy, collapse, eaton-lambert syndrome, enervation, exhaustion, fatigability, fatigue crack, fatigue party, gulf war syndrome, hardy, jet lag, lambert-eaton syndrome, myasthenia, myasthenia gravis, myasthenic syndrome, nonmilitary, oscitance, oscitancy, persian gulf illness, physiological nystagmus, refreshfully, refreshingly, stalwart, stout, strength, sturdy, tension, yawn, yawning

assignment, degenerate, deteriorate, drop, duty assignment, failing, symptom, temporary state, weakness

anaemia, anemia, fatigue duty, jade, outwear, pall, tire, tire out, tiredness, wear, wear down, wear out, wear upon, weariness, weary