-qinile (to be fit, strong)

-qinile (static verb)

to be firm, hard, solid, stiff, strong
to be physically fit
to be headstrong, stubborn, obdurate, pigheaded, stubborn

a word for teenage boys? 
;)

also (I'm finding some more translation sites)
tough, sturdy - wordhippo

uqinile - be strong
hlala uqinile - stay strong
hlale uqinile
mymemory.translated.net 

From a news report  on Zim soccer legend Peter "Nsukuzonke" Ndlovu being discharged from hospital:

“Uqinile wena mfana (you are a strong man) after all that happened. We commend your family for remaining strong and supportive especially Madinda,” said Dr Mpofu. Said Peter in response: “Yini elingiqinisayo mdala. You are one of the people who make me strong,” he said laughing. (nehandaradio.com)

"Nsukuzonke" - every day

A lovely sentence fom isiZulu Oxford Living Dictionary:

Uyamethemba uMokohlane lona, kakhulukazi ngoba useyindoda eqinile, futhi enomusa.

You trust this Mokohlane, especially because he is now a man who is strong and kind too.

“Uqinile wena mfana (you are a strong man) after all that happened. We commend your family for remaining strong and supportive especially Madinda,” said Dr Mpofu. Said Peter in response: “Yini elingiqinisayo mdala. You are one of the people who make me strong,” he said laughing.

“Uqinile wena mfana (you are a strong man) after all that happened. We commend your family for remaining strong and supportive especially Madinda,” said Dr Mpofu. Said Peter in response: “Yini elingiqinisayo mdala. You are one of the people who make me strong,” he said laughing.

“Uqinile wena mfana (you are a strong man) after all that happened. We commend your family for remaining strong and supportive especially Madinda,” said Dr Mpofu. Said Peter in response: “Yini elingiqinisayo mdala. You are one of the people who make me strong,” he said laughing.