(n.) Doubtfulness; uncertainty; doubt.

Janus ambiguity ambitendency ambivalence of impulse antinomy asymmetry biformity bifurcation capriciousness change of mind changeableness conflict conjugation decompensation dichotomy disproportion disproportionateness double-mindedness doubleness doublethink doubling dualism duality dubiety dubiousness duplexity duplication duplicity emotional shock equivocality equivocation external frustration fence-sitting fence-straddling fickleness frustration halving heresy heterodoxy heterogeneity incoherence incommensurability incompatibility incongruity inconsistency inconsonance inconstancy indecision indecisiveness infirmity of purpose instability irony irreconcilability irresolution mental shock mercuriality mugwumpery mugwumpism nonconformability nonconformity oxymoron pairing paradox polarity psychological stress second thoughts self-contradiction stress tergiversation trauma traumatism twinning two-facedness twoness uncertainty unconformability unconformity undecidedness undeterminedness unorthodoxy unsettledness unsettlement