Mêmes voyelles que offuscation
auguration,
auscultation,
commutation,
conurbation,
copulation,
corrugations,
coruscation,
floculation,
formulation,
modulation,
obfuscation,
objurgation,
obscuration,
obturation,
occultation,
occupations,
osculation,
ovulation,
population,
postulation,
procuration,
promulgation,
sporulations.