She facetiously remarked that she was a real expert in rocket science.
The principal suggested facetiously that the students should go barefoot if they disliked the school's footwear regulations. His wife remarked facetiously that he should have a birthday party every week.
You may be going for the fact that it contains all of the vowels, but it is not the only such word. Facetiously contains them all, plus "y" (and in alpha order, to boot).
abstemiously, facetiously
FACETIOUSLY
facetiously
fah-see-shus-lee
no only facetiously
No, it is an adverb. The adjective form is just 'facetious' (done in jest).
Facetious is an adjective. The adverbial form is facetiously.
The word "facetiously" contains the vowels aeiouy in that order.
Abstemiously and facetiously both have the vowels in order.