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demanding
In a sentence
Náročný projekt trvá dlho.
A demanding project takes a long time.
Tento týždeň bol v práci mimoriadne náročný.
This week at work was especially demanding.
Náročná túra cez hrebene trvala celý deň.
The challenging ridge hike lasted all day.
Náročný projekt dokončili pred termínom.
They finished the demanding project ahead of schedule.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.