arduously
adverbformal/ɐɾˈdwa.mẽ.tɨ/low
ar·du·a·men·te
Definition
In an arduous manner; with great difficulty, effort, or labor.
They worked arduously to complete the project on time.
He trained arduously for the marathon.
Common collocations
work arduouslystruggle arduously
Etymology
De 'árduo' + sufixo '-mente'.