Not easily borne; wearing:
— The burdensome task of preparing the income tax return.

synonyms: onerous, taxing.

Roget 319: weighty; weighing etc. v.; heavy as lead; ponderous, ponderable; lumpish^†, lumpy, cumbersome, burdensome; cumbrous, unwieldy, massive.    incumbent, superincumbent^†.    ... show more

Roget 649: hurtful, harmful, scathful^†, baneful, baleful; injurious, deleterious, detrimental, noxious, pernicious, mischievous, full of mischief, mischief-making, malefic, malignant, nocuous, noisome; prejudicial; disserviceable^†, disadvantageous; wide-wasting.    unlucky, sinister; obnoxious; untoward, disastrous.    oppressive, burdensome, onerous; malign etc. (malevolent) 907.    corrupting etc. (corrupt) etc. 659; virulent, venomous, envenomed, corrosive; poisonous etc. (morbific) 657^†; deadly etc. (killing) 361; destructive etc. (destroying) 162; inauspicious etc. 859.    bad, ill, arrant, as bad as bad can be, dreadful; horrid, horrible; dire; rank, peccant, foul, fulsome; rotten, rotten at the core.    vile, base, villainous; mean etc. (paltry) 643; injured &c.; deteriorated etc. 659; unsatisfactory, exceptionable indifferent; below par etc. (imperfect) 651; illcontrived, ill-conditioned; wretched, sad, grievous, deplorable, lamentable; pitiful, pitiable, woeful etc. (painful) 830.    evil, wrong; depraved etc. 945; shocking; reprehensible etc. (disapprove) 932.    hateful, hateful as a toad; abominable, detestable, execrable, cursed, accursed, confounded; damned, damnable; infernal; diabolic etc. (malevolent) 907.    unadvisable etc. (inexpedient) 647; unprofitable etc. (useless) 645; incompetent etc. (unskillful) 699; irremediable etc. (hopeless) 859.    ... show more

Roget 706: hindering etc. v.; obstructive, obstruent^†; impeditive^†, impedient^†; intercipient^†; prophylactic etc. (remedial) 662; impedimentary.    in the way of, unfavorable; onerous, burdensome; cumbrous, cumbersome; obtrusive.    hindered etc. v.; windbound^†, waterlogged, heavy laden; hard pressed.    unassisted etc. (assist) etc. 707; single-handed, alone; deserted etc. 624.    ... show more

Roget 830: causing pain, hurting etc. v.; hurtful etc. (bad) 649; painful; dolorific^†, dolorous; unpleasant; unpleasing, displeasing; disagreeable, unpalatable, bitter, distasteful; uninviting; unwelcome; undesirable, undesired; obnoxious; unacceptable, unpopular, thankless.    unsatisfactory, untoward, unlucky, uncomfortable.    distressing; afflicting, afflictive; joyless, cheerless, comfortless; dismal, disheartening; depressing, depressive; dreary, melancholy, grievous, piteous; woeful, rueful, mournful, deplorable, pitiable, lamentable; sad, affecting, touching, pathetic.    irritating, provoking, stinging, annoying, aggravating, mortifying, galling; unaccommodating, invidious, vexatious; troublesome, tiresome, irksome, wearisome; plaguing, plaguy^†; awkward.    importunate; teasing, pestering, bothering, harassing, worrying, tormenting, carking.    intolerable, insufferable, insupportable; unbearable, unendurable; past bearing; not to be borne, not to be endured; more than flesh and blood can bear; enough to drive one mad, enough to provoke a saint, enough to make a parson swear, enough to gag a maggot.    shocking, terrific, grim, appalling, crushing; dreadful, fearful, frightful; thrilling, tremendous, dire; heart-breaking, heart-rending, heart-wounding, heart-corroding, heart-sickening; harrowing, rending.    odious, hateful, execrable, repulsive, repellent, abhorrent; horrid, horrible, horrific, horrifying; offensive.    nauseous, nauseating; disgusting, sickening, revolting; nasty; loathsome, loathful^†; fulsome; vile etc. (bad) 649; hideous etc. 846.    sharp, acute, sore, severe, grave, hard, harsh, cruel, biting, caustic; cutting, corroding, consuming, racking, excruciating, searching, grinding, grating, agonizing; envenomed; catheretic^†, pyrotic [Med.].    ruinous, disastrous, calamitous, tragical; desolating, withering; burdensome, onerous, oppressive; cumbrous, cumbersome.    ... show more