The Hungarian word for hard is
kemény

Translations for hard and their definitions

nehéz
1. adj. difficult (requiring a lot of effort to do or understand)
2. adj. heavy
3. n. (with a possessive suffix) the (most) difficult part of a task
4. n. (normally in the phrase nehezére esik, usually with a possessive suffix) the heaviness, difficulty, or burden of something
5. n. something heavy or difficult
nehezet kérdez - to ask something difficult
nehezet emel - to lift something heavy