exacting

diligent

ˈdɪlɪdʒ(ə)nt

adjective

having or showing care and conscientiousness in one’s work or duties.

after diligent searching, he found a parcel

industrious,hard-working,assiduous,conscientious,particular,punctilious,meticulous,painstaking,rigorous,exacting,careful,thorough,sedulous,attentive,heedful,intent,earnest,studious,constant,persevering,persistent,tenacious,pertinacious,zealous,dedicated,committed,driven,active,busy,unflagging,untiring,tireless,indefatigable,dogged,plodding,slogging,laborious

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demanding

dɪˈmɑːndɪŋ

adjective

(of a task) requiring much skill or effort.

she has a busy and demanding job

difficult,challenging,testing,taxing,exacting,tough,hard,onerous,burdensome,stressful,formidable,arduous,tiring,wearing,exhausting,wearying,wearisome,draining,uphill,rigorous,gruelling,back-breaking,Herculean,punishing,a tall order,knackering,toilsome

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daunting

ˈdɔːntɪŋ

adjective

seeming difficult to deal with in prospect; intimidating.

a daunting task

intimidating,formidable,disconcerting,unnerving,unsettling,dismaying,discouraging,disheartening,dispiriting,demoralizing,forbidding,ominous,awesome,frightening,fearsome,mean-looking,challenging,taxing,exacting

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choosy

ˈtʃuːzi

adjective

taking excessive care when making a choice.

she’s become very choosy about food

fussy,finicky,over-fastidious,over-particular,faddish,difficult/hard to please,dainty,exacting,demanding,discriminating,discerning,selective,picky,faddy,pernickety,persnickety,nice,overnice,finical

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choosiest

ˈtʃuːzi

adjective

taking excessive care when making a choice.

she’s become very choosy about food

fussy,finicky,over-fastidious,over-particular,faddish,difficult/hard to please,dainty,exacting,demanding,discriminating,discerning,selective,picky,faddy,pernickety,persnickety,nice,overnice,finical

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choosier

ˈtʃuːzi

adjective

taking excessive care when making a choice.

she’s become very choosy about food

fussy,finicky,over-fastidious,over-particular,faddish,difficult/hard to please,dainty,exacting,demanding,discriminating,discerning,selective,picky,faddy,pernickety,persnickety,nice,overnice,finical

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challenging

ˈtʃalɪn(d)ʒɪŋ

adjective

testing one’s abilities; demanding.

challenging and rewarding employment

demanding,testing,taxing,exacting,exigent,searching,stretching,exciting,stimulating,inspiring,energizing,inspirational,difficult,tough,hard,heavy,stiff,formidable,onerous,arduous,laborious,burdensome,strenuous,gruelling

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burdensome

ˈbəːdns(ə)m

adjective

difficult to carry out or fulfil; taxing.

the burdensome responsibilities of professional life

onerous,oppressive,troublesome,weighty,worrisome,vexatious,irksome,trying,crushing,inconvenient,awkward,a nuisance,harsh,severe,stiff,stringent,formidable,an imposition,arduous,strenuous,rigorous,uphill,difficult,hard,laborious,Herculean,exhausting,tiring,taxing,demanding,punishing,gruelling,back-breaking,exacting,wearing,stressful,wearisome,fatiguing,toilsome,exigent

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backbreaking

adjective

(of manual labour) physically demanding.

a day’s back-breaking work

gruelling,arduous,strenuous,onerous,punishing,murderous,crushing,Herculean,demanding,exacting,taxing,formidable,exhausting,draining,laborious,burdensome,tough,stiff,uphill,heavy

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assiduous

/əˈsɪdʒuəs/

adjective

Showing great care and perseverance.

she was assiduous in pointing out every feature

diligent,careful,meticulous,thorough,sedulous,attentive,industrious,laborious,hard-working,conscientious,ultra-careful,punctilious,painstaking,demanding,exacting,persevering,unflagging,searching,close,elaborate,minute,accurate,correct,studious,rigorous,particular

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