hard in Czech
hard in Czech
tvrdý
Resistant to pressure; difficult to break, cut, or penetrate.
těžký
Difficult or requiring a lot of effort to do, understand, experience, or deal with.
obtížný
Difficult or requiring a lot of effort to do, understand, experience, or deal with.
krušný
Difficult or requiring a lot of effort to do, understand, experience, or deal with.