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