not sure Synonym

indecisive, ambivalent, uncertain, wavering, hesitant, irresolute, vacillating, fickle, doubtful, unsure, conflicted, torn, in two minds, undecided, uncommitted, changeable, fluctuating, shilly-shallying, wishy-washy, on the fence [x]

doubtful, suspicious, questionable, uncertain, dubious, fishy, untrustworthy, shady, skeptical, wary, mistrustful, apprehensive, leery, unsure, hesitant, cautious, guarded, incredulous, disbelieving, unconvinced, problematic, unreliable, iffy, dodgy, unproven, unverified, unconfirmed, unsubstantiated, suspecting, distrustful [x]

doubtful, uncertain, questionable, suspicious, unsure, hesitant, skeptical, untrustworthy, unreliable, fishy, shady, ambiguous, equivocal, problematic, debatable, disputable, unclear, indefinite, iffy, unconvincing, inconclusive, wavering, vacillating, indecisive, unresolved, unsettled, precarious, suspect, dodgy, unproven, unsubstantiated, implausible, unpersuasive, dubious [x]

dithering, hesitating, vacillating, wavering, indecision, procrastination, delaying, stalling, faltering, irresolution [x]

indeterminate, uncertain, ambiguous, unresolved, undecided, indefinite, unclear, unconvincing, vague, open-ended, inconclusive [x]

unforeseeable, erratic, uncertain, capricious, volatile, unstable, changeable, inconsistent, unreliable, whimsical, impulsive, mercurial, fickle, wayward, variable, random, haphazard, irregular, incalculable, undependable, fluctuating, temperamental, flighty, quirky, spontaneous, surprising, unexpected, unsteady, inconstant, fitful, mutable, shifting, wavering, unplanned, unanticipated, chance, arbitrary, sudden, ungovernable, uncontrollable, unrestrained, unregulated, unmethodical, unorganized, unstructured, disorderly, chaotic [x]

doubts, mistrust, skepticism, wariness, distrust, misgivings, qualms, apprehensions, uncertainties, reservations, conjectures surmises, speculations, hunches, intuitions, inklings, suspicions [x]

tentative, provisional, temporary, preliminary, interim, conditional, subject to change, uncertain, indefinite, inconclusive, unconfirmed, pending, speculative, hesitant, trial, experimental, probationary, test, exploratory, makeshift, stopgap, short-term, transient, impermanent, revocable, modifiable, adjustable, flexible, adaptable, alterable, amendable, revisable, mutable, changeable, fluctuating, wavering, vacillating, unsure, doubtful, iffy, unsettled, unresolved, open-ended, undetermined, unfinalized, inchoate, nascent, embryonic [x]

undecided, unresolved, uncertain, pending, unconfirmed, unsettled, open, ambiguous, indefinite, unclear, wavering, hesitant, unsure, in limbo, up in the air, in abeyance, in doubt, in question, on the fence, uncommitted, vacillating, equivocal, tentative, provisional, unestablished, unassured, unfinalized, unratified, unsealed, unverified, unproven, untested, untried, unvalidated, unsubstantiated, uncorroborated, moot, debatable, disputable, contestable, arguable, questionable, inconclusive, unascertained, uncharted [x]

debatable, disputable, arguable, questionable, uncertain, doubtful, controversial, unsettled, unresolved, ambiguous, unclear, indefinite, moot, contestable, problematic, dubious, equivocal, undecided, open, inconclusive, unconfirmed, unproven, speculative, iffy, up in the air, in doubt, in question, not certain, not definite, not settled, not sure, open for discussion, open to debate, open to doubt, open to interpretation, open to objection, open to scrutiny, open-ended, pending, touch-and-go, up for grabs, up for discussion, up for debate [x]

inconclusive, indecisive, uncertain, unresolved, ambiguous, indefinite, unclear, open-ended, undetermined, unsettled, vague, equivocal, unconvincing, unconfirmed, unproven, questionable, debatable, doubtful, inconcludent, non-definitive [x]

unsure, doubtful, hesitant, indecisive, unclear, ambiguous, uncertain, insecure, wavering, tentative, iffy, unconfident, unpredictable, unsettled, indefinite, unresolved, undetermined, equivocal, inconclusive, unsteady, vacillating, skeptical, dubious, ambivalent [x]

indecisive, wavering, hesitant, uncertain, irresolute, dithering, fluctuating, ambivalent, torn, unsure, faltering, shilly-shallying, vacillating, undetermined, in two minds, on the fence, in a quandary, in a dilemma, in a state of flux, unsteady, changeable, fickle, variable, unstable, oscillating, pendulous, shuffling, tentative, doubtful [x]

be uncertain about, be doubtful about, be hesitant about, be indecisive about, be unclear about, be ambivalent about, be in two minds about, be undecided about, be conflicted about, be torn about, be wavering about, be irresolute about, be iffy about, be on the fence about, be unsure of, be uncertain of, be doubtful of, be hesitant of, be indecisive of, be unclear of, be ambivalent of, be in two minds of, be undecided of, be conflicted of, be torn of, be wavering of, be irresolute of, be iffy of, be on the fence of [x]

be uncertain about, be unsure about, have doubts about, question, be skeptical about, be hesitant about, be indecisive about, be dubious about, be wary of, be suspicious of, be apprehensive about, be mistrustful of, be distrustful of, have reservations about, be unconvinced about, be in two minds about, be ambivalent about, be conflicted about, be hesitant to believe, be reluctant to accept, be unsure of, be doubtful of, be questioning of, be leery of, be cautious about, be wary about, be skeptical of, be hesitant to trust, be uncertain of, be dubious of, be suspicious about, be apprehensive of, be mistrustful about, be distrustful about, have misgivings about, be unconvinced of, be in doubt about, be in a quandary about, be in a dilemma about, be in a state of uncertainty about, be in a state of doubt about, be in a state of hesitation about, be in a state of indecision about, be in a state of ambivalence about, be in a state of conflict about, be in a state of skepticism about, be in a state of wariness about [x]