quinicuac.

Headword: 
quinicuac.
Principal English Translation: 

the next thing; later; then; when; at that time

Orthographic Variants: 
quiniquac, quin icuac, quin iquac
IPAspelling: 
kinihkwɑːk
Alonso de Molina: 

quiniquac. entonces. aduerbio.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 90r. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

QUINIHCUĀC when (noninterrogative) / entonces (M) [(6)Cf.100v,101r,131r,(2)Rp.92]. According to C, QUINIHCUĀC is distinct from IHCUĀC in that it implies some prior event (f.Ioov). See QUIN, IHCUĀC.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 212.

Andrés de Olmos: 

entonces
Andrés de Olmos, Arte para aprender la lengua Mexicana, ed. Rémi Siméon, facsimile edition ed. Miguel León-Portilla (Guadalajara: Edmundo Aviña Levy, 1972), 189.