معنی کلمه enthusiasm

intense interest or excitement

Is the example correct? I think the correct sentence should be:
"What surprising was people's enthusiasm about the competition."

The student had an enthusiasm for science .

He did not have an equal enthusiasm for all sports .

His enthusiasm and genuine warmth melted more of her resistance .

She had dreamed of someone who would share her enthusiasm in horses – of someone who would treat her well .

I underestimated your enthusiasm.

Youthful enthusiasm is not rewarded in this way.

Beside himself with enthusiasm, Rostov ran after him with the crowd.

It was received with great enthusiasm.

She smiled without enthusiasm.