What does the Swahili phrase naustawi mean in English?

Answer 1

This appears to be a mistake made by someone who uses Swahili words from the dictionary without understanding how they're used. The form of this word is a verb, but its root, ustawi, or usitawi, is a noun and cannot be declined as a verb.

The noun usitawi means "flourishing" or "in good condition." The verb is kusitawi (kustawi), but this contributor has never heard it used of human beings but only of crops, plants, or possibly livestock. Mahindi yangu yanastawi, my corn is flourishing. There are many ways to say "I am in good condition" (which appears to be what the made-up word naustawi is intended to convey), but common ones are hali yangu nzima, mimi mzima, najisikia mzima, all of which can be translated as "I am in good condition" or "I am well."