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isolated

In a sentence
Takýto prípad je úplne ojedinelý.
Such a case is completely isolated.
Takýto úkaz je v našom kraji ojedinelý.
Such a phenomenon is rare in our region.
Ojedinelý prípad chyby rýchlo opravili.
They quickly fixed the isolated case of the error.
Ojedinelý prípad otravy vyšetrujú hygienici.
Health officials are investigating an isolated case of poisoning.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.