- 2Significato: industriousassiduous diligent laborious sedulousbusy overworked hard-working
- 3Significato: propertydifficult arduous laborious hard stiff
- 4Significato: burdensomefatiguing tiring laboriousstrenuous toilsome wearisome
- 5Significato: arduouspainstaking difficult tortuouslaborious severe painful
- 6Significato: tirelesslaborious unfailing indefatigable notableunrelenting industrious patient diligent
- 7Significato: difficultarduous burdensome fatiguing tiresomewearisome onerous toilsome laborious
- 8Significato: painstakingdetailed assiduous diligenthard-working industrious laborious
- 9Significato: tiresomegrinding laborious strenuous tedioushard arduous onerous gruelling
- 10Significato: hardlaborious arduous strenuous difficult
- 11Significato: diligentindustrious constant laborious devotedapplied sedulous assiduous