Principal English Translation:
Alonso de Molina:
ayaxcan. condifficultad, o apenas. aduerbio.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 3r. col. 2. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
ĀYĀXCĀN with difficulty, slowly / con dificultad , o apenas (M), algo despacio, y con flema (C)
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 16.
Horacio Carochi / English:
ayāxcān = with difficulty, slowly
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), 454–55 (with n4), 498.
Attestations from sources in Spanish:
Ayaxcan in tlalticpac yc nemohua = Con dificultad se vive así en la tierra
Huehuehtlahtolli. Testimonios de la antigua palabra, ed. Librado Silva Galeana y un estudio introductorio por Miguel León-Portilla (México: Secretaría de Educación Pública, Fondo de Cultura Económica, 1991), 70–71.