certain(p), sure

unclear, uncertain, undecided, noncommittal, apprehensive, hesitant, skeptical, unconvinced, unaware, doubtful, puzzled, perplexed, ambivalent, anxious, concerned, coy, confused, hopeful, uneasy, noncommital, tightlipped, reluctant, optimistic, leery, wary, curious, confident, unconcerned, sure, unknown, fearful, unhappy, afraid, unable, undetermined, adamant, convinced, unsatisfied, cautious, cagey, aware, unlikely, dissatisfied, unexcited, clueless, nervous, sanguine, unsettled, likely, unwilling, dumbfounded, eager, skittish, scared, unprepared, reticent, flummoxed, unworried, evasive, iffy, unsurprised, happy, unimpressed, conflicted, unenthusiastic, sketchy, mindful, debatable, fretted, equivocal, unavailable, jittery, frustrated, indifferent, loath, murky, pessimistic, antsy, circumspect, willing, excited, unfamiliar, inclined, unfazed, glad, undaunted, vague, unforthcoming, uncomfortable, incredulous, unperturbed, nonplussed, befuddled, underwhelmed, clear, unconfident, unknown quantity, cognizant, astonished, ambiguous, ready, unsteady, insecure, diffident, compassionate, carefree, listless, shaky, impatient, agitated, thoughtful, timid

awkward, doubt, doubtfulness, dubiety, dubiousness, falter, ill at easep, incertitude, uncertainty, uneasy, waver

ambivalent, diffident, doubtful, dubious, groping, hesitant, incertain, insecure, shy, timid, uncertain, unconfident, unsafe