"Ti kluci jsou hezcí."

Translation: Those boys are handsome.

[cmetzner]

couldn't we use "those boys are nice" as a translation?

[ValaCZE]

"Nice" does not mean "hezký" when used for people.

[HectorCon1991]

Should it be "hezčí"?

[endless_sleeper]

Hezčí is the comparative form of hezký.

[Phylit]

Why is beautiful not accepted?

[AgnusOinas]

We use the word "krásný" for "beautiful". It's stronger than handsome/pretty.

[Waki9]

Is it allowed to use hesci and hezky?

[endless_sleeper]

'hescí' does not exist. Hezký, used in this sentence, would be non-standard Czech. You need to use the appropriate case ending.

[kamyk00]

Why not THESE boys are handsome? Wouldn't 'those' actually be 'tamci'?

[ValaCZE]

TAMTI - the, those

TITO - these

[Esus111138]

No. The singular is "tamten", so plural must be in animate masculine "tamti"