ecauhtilia.

Headword: 
ecauhtilia.
Principal English Translation: 

to lighten something (see Karttunen)

Orthographic Variants: 
ehcauhtiliā
IPAspelling: 
ehkɑwtiliɑː
Frances Karttunen: 

EHCAUHTILIĀ vt to lighten something / lo hace menos pesado (Z) [(2)Zp.97,187]. It seems plausible to relate this in sense to EHCAUHYŌ-TL, referring to shadows and light , insubstantial things. It is opposite in sense from ETIY(A) ‘to be heavy.’
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 75.