-yolic.

Headword: 
-yolic.
Principal English Translation: 

slowly, gently; a possessive prefix most often but by no means always in 3rd person singular

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), 242.

Lockhart’s Nahuatl as Written: 

combining form -yōlīcah, thus may be by origin a pret. agentive noun used adverbially. source not clear. length of the i not entirely certain.
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), 242.