to give something in return; or, to avenge an insult (see Molina)
IPAspelling:
kwepkɑːjoːtiliɑ
Alonso de Molina:
cuepcayotilia. nitetla. (pret. onitetlacuepcayotili.) dar algo enretorno, o vengarse dela injuria. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 26r. col. 1. Thanks to Joe Campbell for providing the transcription.