inaya.

inaya. nitla. (pret. onitlainax.) encubrir o esconder algo.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 38r. col. 2. Thanks to Joe Campbell for providing the transcription.

inaya. nin. (pret. onininax.) esconderse, o guarecerse en algun lugar.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 38r. col. 2. Thanks to Joe Campbell for providing the transcription.

inaya. antesque. aduerbio.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 38r. col. 2. Thanks to Joe Campbell for providing the transcription.

ĪNĀY(A) vrefl,vt; pret: ĪNĀX to hide or take refuge somewhere; to hide something / esconderse o guarecerse en algún lugar (M), encubrir o escuchar algo (M)
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 106.

īnāya = to hide
Horacio Carochi, S.J., Grammar of the Mexican language with an explanation of its adverbs (1645), translated and edited with commentary by James Lockhart, UCLA Latin American Studies Volume 89 (Stanford: Stanford University Press, UCLA Latin American Center Publications, 2001), 244–45, 503.