0 the quality of being very difficult or needing a lot of effort: --
I had no idea of the onerousness of the journey that was to follow.
They complained about the onerousness and the difficulty of routine work.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.