amo quin quexquichcahuitl.

Headword: 
amo quin quexquichcahuitl.
Principal English Translation: 

not just a little while ago, i.e. long ago, in ancient times (see Molina)

Orthographic Variants: 
amo quin quexquichcauitl
Alonso de Molina: 

amo quin quexquichcauitl. no ha poco tiempo, o antiguamente.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 5v. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

Cahuitl, the word for time is key here.