Synonyms for Iffy:

• adj.

  •chancy (adjective)
  • iffy,
  • ticklish,
  • touchy,
  • rocky,
  • hazardous,
  • Fluctuant,
  • tricky,
  • unsound,
  • contingent.
  •changeable (adjective)
  • unpredictable.
  •conditional (adjective)
  • not absolute,
  • Codicillary,
  • with strings attached,
  • with grain of salt.
  •debatable (adjective)
  • questionable,
  • moot,
  • Mootable,
  • bone of contention.
  •dicey (adjective)
  • dangerous,
  • difficult.
  •doubtful (adjective)
  • indistinct,
  • disreputable,
  • insecure,
  • fishy,
  • pending,
  • long shot,
  • unstable,
  • far-fetched,
  • suspect,
  • impugnable,
  • fat chance,
  • suspicious,
  • hazy,
  • uneasy,
  • shady.
  •dubious (adjective)
  • hesitant,
  • diffident,
  • wavering,
  • reluctant,
  • perplexed,
  • skeptical,
  • undependable,
  • untrustworthy,
  • unreliable,
  • fly-by-night.
  •erratic (adjective)
  • eccentric,
  • abnormal,
  • anomalous,
  • meandering,
  • planetary,
  • bizarre,
  • volatile,
  • shifting,
  • stray,
  • nomadic,
  • arbitrary,
  • irregular,
  • devious,
  • unnatural,
  • weird,
  • unusual,
  • changeable,
  • inconsistent,
  • fitful,
  • oddball,
  • idiosyncratic,
  • roving,
  • spasmodic,
  • wayward,
  • rambling,
  • desultory,
  • strange,
  • mercurial,
  • peculiar,
  • aberrant,
  • inconstant.
  •iffy (adjective)
  • unsettled,
  • capricious,
  • whimsical,
  • in lap of gods.
  •precarious (adjective)
  • pre-carious,
  • un healthier,
  • hanging by a thread,
  • un-steadier,
  • un safe,
  • un steadiest,
  • un-safer,
  • out limb,
  • un-steadiest,
  • pre carious,
  • un steadier,
  • out a limb,
  • more dynamite,
  • un-safe,
  • un healthiest,
  • un-safest,
  • un-healthiest,
  • un safest,
  • un healthy,
  • un safer,
  • un steady,
  • most dynamite,
  • un-healthy.
  •provisory (adjective)
  • provisory.
  •questionable (adjective)
  • more paradoxical,
  • most paradoxical,
  • un proven,
  • un-proven,
  • hypo thetical,
  • more controvertible,
  • un defined,
  • more unproven,
  • open doubt,
  • un-defined,
  • most controvertible,
  • most unproven,
  • hard believe,
  • hypo-thetical.
  •risky (adjective)
  • not prayer,
  • off the deep end,
  • wideopen,
  • on spot,
  • risky,
  • end-angered,
  • end angered.
  •speculative (adjective)
  • more formularized,
  • notional,
  • more idealized,
  • unproved,
  • more presumed,
  • more ideological,
  • un proved,
  • most idealized,
  • most formularized,
  • more conceptive,
  • un-proved,
  • most ideological,
  • formularized,
  • most presumed,
  • most conceptive.
  •tentative (adjective)
  • more probationary,
  • de pendent,
  • testest,
  • most probationary,
  • more provisionary,
  • most provisionary,
  • pro visionary,
  • subject change,
  • pro-visionary,
  • de-pendent.
  •unapt (adjective)
  • un aptest,
  • un apter,
  • un-apter,
  • un-aptest.
  •uncountable (adjective)
  • un countable,
  • un-countable.
  •undecided (adjective)
  • un decided,
  • un finished,
  • un-finished,
  • un-decided,
  • more dithering,
  • more pendent,
  • most dithering.
  •unpredictable (adjective)
  • more fluctuating,
  • from left field,
  • un predictable,
  • un-predictable.
  •unsubstantiated (adjective)
  • uncorroborated.
  •unsure (adjective)
  • mis-trustful,
  • most rootless,
  • un-confident,
  • wimpiest,
  • dis-trustful,
  • mis trustful,
  • un sure,
  • more rootless,
  • un confident,
  • un-sure,
  • more unconfident,
  • most unconfident,
  • dis trustful,
  • in quandary.
  •up in the air (adjective)
  • up in air,
  • up the air,
  • up air.
  •variable (adjective)
  • more yo-yo,
  • most changeful,
  • more unequable,
  • most yo-yo,
  • most unequable,
  • un equable,
  • most yo yo,
  • un-equable,
  • more changeful,
  • more yo yo,
  • most yoyo,
  • more yoyo,
  • yo yo.

• n.

  •
  • questioning,
  • bewildered,
  • sceptical,
  • inclined to think/believe/agree etc..

• Other synonyms:

  •
  • clouded,
  • dubitable.
  •
  • ambiguous.
  •
  • borderline,
  • equivocal.

Antonyms for Iffy:

• adj.

  • chancy
    secure, safe, tried, not dangerous.
  • conditional
    unconditional, unlimited, unrestricted, unqualified, independent.
  • debatable
    incontrovertible, inarguable, Uncontestable, Indubious, questionable, undoubted.
  • doubtful
    decided, exact, settled, resolved, clear, unquestionable, confirmed.
  • dubious
    positive, trustworthy, Undoubtful, trusty, doubtless.
  • erratic
    dependable, consistent, unchanging, steady, predictable, regular.
  • iffy
    definite, certain, reliable, sure.
  • improbable
    ostensible, plausible, probable, possible, believable, tenable, likely.
  • incalculable
    countable, calculable, limited, measurable.