Look up this word
powerful

In a sentence
Tom je mocný.
Tom's strong.
Mocne som ju objal.
I hugged her tightly.
Hovor pravdu mocným.
Speak truth to power.
Je mocným čarodejníkom.
He's a powerful sorcerer.
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.