conditional
accidental
ad hoc
adventitious
aleatory
alternate
alternative
backup
band-aid
casual
circumstantial
contingent
counterfeit
cut-and-try
dangerous
dependent
desultory
dummy
empirical
equivalent
ersatz
experimental
fake
fixed
forehanded
foreseeing
foresighted
forethoughted
forethoughtful
given
hazardous
heuristic
hit-or-miss
imitation
improvisational
improvised
incidental
inessential
infirm
insecure
insubstantial
interim
jury-rigged
makeshift
makeshifty
mock
nonessential
occasional
perilous
phony
arbitrary
constitutional
definitive
erroneous
federal
legislative
nominal
parliamentary
prior
republican
respective
tacit
temporary
tentative
territorial
collisional
divisional