laborious
/ləˈbɔːɹiəs/ adjective C2- Requiring much physical effort; toilsome.
- Mentally difficult; painstaking.
- Industrious.
From the library
The floor of the abbé’s cell was paved, and it had been by raising one of the stones in the most obscure corner that Faria had been able to commence the laborious task of which Dantès had witnessed the completion.
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