uncertain
accidental
adventitious
aleatory
arguable
at issue
capricious
casual
causeless
chance
chancy
confutable
conjectural
contestable
contingent
controversial
controvertible
debatable
deniable
destinal
dicey
disputable
doggy
doubtable
doubtful
dubious
dubitable
erratic
fatal
fatidic
fishy
fluctuant
fluky
fortuitous
in dispute
in doubt
in dubio
in question
incalculable
incidental
indeterminate
mistakable
moot
open to doubt
open to question
problematic
questionable
refutable
risky
speculative
150-cm
6-volt
anti-buddhist
dry-cell
either-or
either/or
long-life
nickel-cadmium
nine-volt
open-and-shut
romantic
rsenal
well-based
Giffy
Spiffy
jiffy
sniffy
spiffy