"big boy"

Translation: velký kluk

[zickovski]

what is the difference between kluk,chlapec and hoch? which one is the most official? i am Polish and we say: chłopak or chłopiec... but i have never heard kluk or hoch before

[Tomchy1]

You might find the answer here:
https://forum.duolingo.com/comment/27749621/So-many-different-ways-of-saying-things-hoch-kluk-chlapec