indecisive
agnostic
ambiguous
balbutient
bashful
boggling
capricious
cautious
chancy
changeable
demurring
dicey
diffident
doubtful
doubting
equivocal
erratic
faltering
fickle
halting
hesitant
hesitative
hesitatory
incalculable
indemonstrable
irresolute
jibbing
modest
polysemous
qualmish
scrupling
scrupulous
shilly-shallying
shrinking
shy
skeptical
squeamish
stammering
sticking
stickling
straining
stumbling
stuttering
suspensive
tentative
timid
assured
certain
decided
dogmatic
ready