popohui.

Headword: 
popohui.
Principal English Translation: 

for something to come into its own or be as it should be

James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 230.

Lockhart’s Nahuatl as Written: 

often but not necessarily with on-. synonymous with and often paired with ixtlāhui. Class 2: ōnipōpōuh. reduplication of pōhui. 230

Attestations from sources in English: 

popohui ixtlahui = to flourish, come into one's own (central Mexico, sixteenth century)
Personal communication, James Lockhart, in sessions analyzing Huehuetlatolli.