Definify.com
Webster 1913 Edition
Peradventure
Perˊad-ven′ture
,Noun.
Chance; hap; hence, doubt; question;
as, proved beyond
. peradventure
South.
Webster 1828 Edition
Peradventure
PERADVENT'URE
,adv.
It has been used as a noun for doubt or question, but rather improperly. The word is obsolescent and inelegant.