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empty

In a sentence
Tento je prázdny.
This one's empty.
Pohár je prázdny.
The glass is empty.
Pohár bol prázdny.
The glass was empty.
Dom je prázdny.
The house is empty.
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.