Đồng nghĩa của upstream

Trái nghĩa: downward,

upriver

demanding challenging difficult exacting hard taxing arduous tough testing wearing formidable gruelling onerous painstaking bruising burdensome daunting debilitating exhausting harsh ponderous rigorous stressful toilsome tortuous torturous uphill agonising agonizing excruciating fatiguing grueling laborious tedious tiresome tiring unforgiving backbreaking brutal cumbersome draining effortful forbidding galling grievous grinding harrowing heavy hellacious hellish herculean intolerable killer moiling murderous operose oppressive persnickety punishing rough rugged severe stiff strenuous stringent sweaty tall toilful troublesome trying unbearable wearisome wearying bothersome crushing distressful distressing exigent fierce gargantuan grim hairy intimidating jarring knackering painful pressing sapping solemn thorny unpleasant unyielding vigorous weighty ambitious backbreaker depleting imperious killing shattering tricky unsparing back-breaking Herculean Augean energy-consuming time-consuming pick-and-shovel unremitting immense intense mighty titanic colossal gigantic staggering extreme really hard very hard thoroughgoing immoderate hefty major insufferable laboured ominous labored worksome problematic prohibitive merciless not easy hard-won no picnic ferocious savage tough going easier said than done vicious cruel difficile unnerving dicey awful problem hazardous nerve-racking high-impact slavish sticky torturesome unendurable tormenting drudgy serious marathon like getting blood out of a stone uncomfortable troubling almighty impossible scabrous uphill battle crippling high-pressure discomforting irksome enervating vexatious worrying relentless exasperating traumatic worrisome vexing mean awkward disturbing frustrating inconvenient enervative upsetting wicked unreasonable aggravating hectic maddening pressured fraught strict terrible annoying inhuman superincumbent disagreeable pesky bitter hardhanded searing excessive pestilent irritating austere bad nagging monumental weary infuriating bold niggling nasty murder energetic impressive knotty aggressive plaguy pestiferous pestilential punitive troublous rowdy carking prostrating exorbitant embittering hostile grave tense grandiose steep daring perturbing anxious unfair Sisyphean drastic draconian dreadful harassing unsettling extravagant lofty rankling concerning intractable ungovernable objectionable drudging repressive infernal irking agitating busy domineering elaborate inexorable despotic headache abrasive riling very difficult overwhelming ugly boring unmanageable wretched chafing nettling nettlesome peeving incommodious confounded undisciplined disorderly unjust recalcitrant large-scale wayward discouraging puzzling unruly rebarbative cussed pesty plaguey a stinker of a anxiety-ridden physical powerful stretching huge prodigious searching responsible withering racking chastening massive unrelaxing strained uncharitable unkind fiendishly difficult tremendously difficult very challenging unrelenting overtaxing overpowering plodding spartan mammoth careful hypercritical thorough precise critical nit-picking a nuisance dour protracted lengthy hardworking tight an imposition large order heavy sledding dogged overburdening high forceful heroic courageous slow by the book grating provoking displeasing no piece of cake shocking repugnant exerting swingeing sky-high inflated extortionate enraging lamentable deplorable unwelcome antagonizing harrying afflicting disappointing ghastly foul horrible rotten horrid vile audacious iniquitous inordinate outrageous teasing festering antipathetic appalling atrocious frightful horrendous abominable tyrannical industrious unsatisfying unattractive antagonising dictatorial unrealistic grand intrepid autocratic offensive enough to try the patience of a saint enough to drive you up the wall undemocratic grotty pretentious visionary frantic chaotic improbable ballsy brash idealistic unfeasible insupportable perverse complex complicated tyrannous fanciful unreal magnificent active eventful frenzied frenetic lively authoritarian iron-fisted lousy beastly improper unlikely overbearing pitiless ruthless coercive anti-democratic disquieting discomposing mystifying high-handed overweening peremptory from hell unacceptable egregious importunate turbulent restless far-fetched disheartening gloomy sombre dispiriting ironhanded rough going dismal depressive bleak heavy-handed somber depressing confining difficult to achieve infestive dangerous alarming damaging messy flustering animated madhouse tireless full tumultuous riotous furious bustling wild problematical bewildering intricate incomprehensible convoluted perplexing baffling confounding beyond bearing not to be borne full on spirited action-packed bumpy raucous a bummer of a disobedient rebellious dysfunctional defiant delinquent socially impaired belligerent willful self-willed naughty badly behaved uncooperative impudent erratic errant hot-tempered disturbed disruptive badly-behaved misbehaving whiny roguish sullen cantankerous undisciplinable loudmouthed contumacious ill-behaved bellicose incorrigible insolent maladjusted rude confrontational combative argumentative malicious ill-disciplined mischievous truculent pugnacious unrestrainable uncontrollable stubborn scrappy uncompliant rascally insubordinate uncontainable peevish devilish petulant indocile

upstretched upsurge upsurged upsurges upsurging upswing ups to this time ups to the present time ups to date with up sticks ups the ante upstarts