cepa.

Headword: 
cepa.
Principal English Translation: 

once, one time (see Karttunen)

Orthographic Variants: 
cēpa
IPAspelling: 
seːpɑ
Frances Karttunen: 

CĒPA once, one time / una vez (Z) [(6)Zp.129,202,231]. Sources other than Z have CEPPA. See CĒ, -PA.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 32.