"Náš dědeček je dobrý muž."

Translation: Our grandfather is a good man.

[Cc1H5]

I guess "Our grandpa is a kind man." is also a valid translation

[rkvance5]

Wouldn't kind have a different translation? I mean, I'm relatively new to Czech, but I assume it is as capable of that sort of nuance as English is. The dictionary tells me that "kind" is laskavý.

[Cc1H5]

You are probably right.

My first languages are russian and ukrainian, so there are loads of words that are "false friends" in czech for me

[Alchamei]

It is close, but 'Náš dědeček je hodný muž' is better translation of your sentence.