(1):
(a.) To make uncertain.
(2):
(a.) Not sure; liable to fall or err; fallible.
(3):
(a.) Irresolute; inconsonant; variable; untrustworthy; as, an uncertain person; an uncertain breeze.
(4):
(a.) Questionable; equivocal; indefinite; problematical.
(5):
(a.) Not certain; not having certain knowledge; not assured in mind; distrustful.