skepticize
verbEtymology From skeptic + -ize.
1
To doubt; to be skeptical
- to skepticize, where no one else will […] hesitate1709, Anthony Ashley-Cooper, 3rd Earl of Shaftesbury, “The Moralists, a Philosophical Rhapsody”, in Characteristics of Men, Manners, Opinions, Times, volume II, London, published 1732: