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father's

In a sentence
Tom si vyskúšal otcov oblek.
Tom tried his father's suit on.
Všetko najlepšie ku Dňu otcov!
Happy Father's Day!
Požičal som si otcov starý kabát na výlet.
I borrowed Dad's old coat for the trip.
Otcov hlas som spoznal hneď cez telefón.
I recognized Dad's voice on the phone right away.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Includes Tatoeba example sentences when present.
Full attribution on References.