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reason

In a sentence
Poznám skutočný dôvod, prečo nechceš ísť.
I know the real reason you don't want to go.
Viem, aký je skutočný dôvod, prečo nechceš ísť.
I know the real reason you don't want to go.
Nie je dôvod sa báť.
There's no reason to be afraid.
Poznám skutočný dôvod jeho neprítomnosti.
I know the real reason for his absence.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Example sentences from Tatoeba (CC BY 2.0 FR).
Full attribution on References.