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In a sentence
Neúnavne pracovala na svojom projekte celé leto.
She worked tirelessly on her project all summer.
Dobrovoľníci neúnavne pomáhali po povodni.
The volunteers worked tirelessly after the flood.
Tréner neúnavne vysvetľoval hráčom nový systém.
The coach tirelessly explained the new system to the players.
Neúnavne hľadali strateného psa v okolí dediny.
They tirelessly searched for the lost dog around the village.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.