This is the 713th most frequent Czech word.
zvýšil
"Increased" or "raised."
Here, 'zvýšil' is used in the sense of 'enhancing' or 'improving' something quantitatively, specifically the car's performance.
Petr zvýšil výkon svého auta pomocí nového motoru.
Petr increased the performance of his car using a new engine.
In this sentence, 'zvýšil' means 'raised' or 'hiked,' and it describes an upward adjustment in prices.
Společnost zvýšila ceny svých produktů kvůli vyšším nákladům.
The company increased the prices of its products due to higher costs.
Here, 'zvýšil' conveys the idea of 'boosting' or 'strengthening' an abstract quality like confidence.