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hard

Examples
In a sentence
Tvrdá práca mu umožnila dostávať dobré známky.
Hard work enabled him to get good marks.
Táto posteľ je tvrdá.
This bed is hard.
Daj si pozor na každého, kto tvrdí, že je objektívny.
Beware of anyone who claims objectivity.
Tu Pán, Boh, dopustil na Adama tvrdý spánok, a keď zaspal, vybral mu jedno rebro a jeho miesto zaplnil mäsom.
Then the Lord God cast a deep sleep upon Adam: and when he was fast asleep, he took one of his ribs, and filled up flesh for it.
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.