WordNet: arduous, backbreaking, grueling, gruelling, hard, heavy, laborious, operose, punishing, toilsome

characterized by effort to the point of exhaustion; especially physical effort; "worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace"

• similar to effortful

arduous

• (englanti) arduousness (derivationally related)
• (suomi) työläs (synonyymi)

• (suomi) vaativa (synonyymi)

backbreaking

• (suomi) raskas (synonyymi)

grueling

• (suomi) uuvuttava (synonyymi)

gruelling

• (suomi) rasittava (synonyymi)

hard

• (englanti) hardness (derivationally related)
• (suomi) kova (synonyymi)

heavy

• (englanti) heaviness (derivationally related)
• (suomi) rankka (synonyymi)

laborious

• (englanti) laboriousness (derivationally related)

• (englanti) labor (derivationally related)
• (suomi) vaivalloinen (synonyymi)

operose

• (englanti) operoseness (derivationally related)
• (suomi) työläs (synonyymi)

punishing

• (suomi) näännyttävä (synonyymi)

toilsome

• (englanti) toilsomeness (derivationally related)
• (suomi) vaivalloinen (synonyymi; <note>vanh</note><note>run</note>)