* Swifter: ātahi (can also be used to mean "faster")
* Higher: teitei
* Stronger: kaha
Putting it together:
* Ātahi, teitei, kaha
You can also say:
* Ātahi ake, teitei ake, kaha ake - This adds "more" or "even" to each word, emphasizing the increase.
* Ātahi tonu, teitei tonu, kaha tonu - This emphasizes the continuous nature of being swifter, higher, and stronger.
The choice of phrasing depends on the context and the specific emphasis you want to convey.