Synonyms for Under-handed:

• adj.

  •Machiavellian (adjective)
  • expedient,
  • Contriving,
  • Plotting,
  • conniving,
  • opportunist.
  •corrupt (adjective)
  • base,
  • bribable,
  • foul,
  • unprincipled,
  • fast and loose,
  • on the take,
  • iniquitous,
  • reprobate,
  • extortionate,
  • untrustworthy,
  • gone to the dogs,
  • rotten,
  • two-faced,
  • inconstant,
  • racket up,
  • venal,
  • wide open,
  • padded,
  • bent,
  • knavish,
  • profiteering,
  • faithless,
  • treacherous,
  • unfaithful,
  • perfidious,
  • mercenary,
  • open,
  • Suborned,
  • exploiting,
  • nefarious,
  • tainted,
  • double-dealing,
  • fixed,
  • praetorian,
  • underhanded,
  • debauched,
  • snide.
  •dastardly (adjective)
  • cowardly,
  • craven,
  • pusillanimous,
  • low,
  • vile,
  • despicable,
  • mean,
  • contemptible.
  •deceitful (adjective)
  • deceptive,
  • crafty,
  • artful,
  • beguiling,
  • fallacious,
  • designing,
  • stealthy,
  • Impostrous,
  • delusive,
  • disingenuous,
  • mendacious,
  • subtle,
  • tricky,
  • false,
  • indirect,
  • illusory,
  • insidious,
  • lying,
  • delusory,
  • duplicitous,
  • rascal,
  • roguish,
  • foxy,
  • Deceiving,
  • slick,
  • counterfeit,
  • hypocritical,
  • feline,
  • astute,
  • Astucious,
  • misleading,
  • untruthful.
  •deceptive (adjective)
  • fishy,
  • phony,
  • catchy,
  • specious,
  • oblique,
  • Deluding,
  • serpentine,
  • Imposturous,
  • mock,
  • plausible,
  • bum,
  • fake,
  • slippery,
  • spurious,
  • ambiguous,
  • seeming,
  • off,
  • unreliable.
  •devious (adjective)
  • erring,
  • faking one out,
  • playing games,
  • put on,
  • obliquitous,
  • playing politics,
  • evasive,
  • shrewd,
  • not straightforward,
  • roundabout,
  • errant,
  • insincere,
  • sneaking,
  • calculating.
  •dirty (adjective)
  • below the belt,
  • sordid,
  • sleazy,
  • shabby.
  •dishonest (adjective)
  • elusive,
  • disreputable,
  • two-timing,
  • double-crossing,
  • Swindling,
  • sinister,
  • villainous,
  • traitorous,
  • hoodwinking,
  • recreant,
  • Backbiting,
  • unctuous,
  • Bluffing.
  •disingenuous (adjective)
  • feigned,
  • Uncandid,
  • unfrank.
  •double-dealing (adjective)
  • ambidextrous,
  • double,
  • left- handed.
  •false (adjective)
  • disloyal,
  • scoundrelly,
  • treasonable,
  • dishonorable,
  • rascally,
  • Canting,
  • renegade,
  • wicked,
  • apostate,
  • malicious,
  • Perjured,
  • falsehearted,
  • Forsworn,
  • mythomaniac,
  • malevolent.
  •foul (adjective)
  • inequitable,
  • vicious,
  • unjust,
  • caitiff,
  • monstrous.
  •furtive (adjective)
  • cloaked,
  • hush-hush,
  • masked,
  • circumspect,
  • disguised,
  • under wraps,
  • hidden,
  • skulking,
  • cautious,
  • creepy,
  • undercover,
  • Slinking,
  • under-the-table,
  • sub-rosa,
  • conspiratorial.
  •roguish (adjective)
  • impish,
  • puckish,
  • playful,
  • devilish,
  • naughty.
  •secret (adjective)
  • confidential,
  • inside,
  • classified,
  • backdoor,
  • discreet,
  • under false pretense,
  • unacknowledged,
  • top secret,
  • cryptic,
  • restricted,
  • camouflaged,
  • close,
  • Dissembled,
  • in ambush,
  • backstairs,
  • sneak,
  • incognito,
  • dissimulated.
  •shady (adjective)
  • ignominious,
  • shoddy,
  • dubious,
  • inglorious,
  • shameful,
  • questionable,
  • suspect,
  • scandalous,
  • disgraceful,
  • infamous,
  • notorious,
  • unrespectable.
  •two-faced (adjective)
  • backstabbing.
  •underhand (adjective)
  • concealed,
  • on the qt,
  • dirty-dealing,
  • on the quiet.
  •underhanded (adjective)
  • crooked,
  • subversive,
  • corrupt,
  • unscrupulous,
  • furtive,
  • wily,
  • surreptitious,
  • dishonest,
  • shady,
  • devious,
  • unfair,
  • guileful,
  • clandestine,
  • cunning,
  • unethical,
  • dirty,
  • covert,
  • shorthanded,
  • deceitful,
  • shifty,
  • cheating,
  • sly,
  • scheming,
  • fraudulent,
  • secretive,
  • underhand,
  • sneaky,
  • secret.
  •undue (adjective)
  • extreme,
  • overmuch,
  • unwarranted,
  • unfitting,
  • exceeding,
  • Unapt,
  • improper,
  • needless,
  • unjustifiable,
  • indecorous,
  • unseemly,
  • too great,
  • inept,
  • unmeasurable,
  • disproportionate,
  • ill-timed,
  • intemperate,
  • too much,
  • exorbitant,
  • unsuitable,
  • unwarrantable,
  • uncalled-for,
  • inapt,
  • inordinate,
  • extravagant,
  • unconscionable,
  • unseasonable,
  • unjustified,
  • immoderate,
  • illegal,
  • untimely,
  • unreasonable,
  • forbidden,
  • inappropriate,
  • undeserved.
  •unreliable (adjective)
  • fly-by-night,
  • unsure,
  • hallucinatory,
  • pretended,
  • sham,
  • pseudo,
  • inaccurate,
  • capricious,
  • fickle,
  • meretricious,
  • unconvincing,
  • untrue,
  • fallible,
  • weak,
  • implausible,
  • erroneous,
  • vacillating,
  • wavering,
  • hollow,
  • unstable,
  • uncertain,
  • makeshift,
  • unsound,
  • irresponsible,
  • undependable,
  • mistaken.
  •unscrupulous (adjective)
  • conscienceless,
  • petty,
  • ruthless,
  • casuistic,
  • exploitative,
  • selfish,
  • low-down,
  • self-seeking,
  • arrant,
  • degrading,
  • unconscientious,
  • unworthy,
  • shameless,
  • wrongful,
  • degraded.
  •wily (adjective)
  • cagey,
  • deep,
  • sharp,
  • sagacious,
  • arch,
  • greasy,
  • smooth,
  • streetwise,
  • crazy like a fox,
  • intriguing,
  • knowing.

Antonyms for Under-handed:

• adj.

  • corrupt
    helpful, respectable, wholesome, purified, upright, Uncorrupt, high, noble, sound, kind, decent, honorable, pure, clean.
  • dastardly
    worthy.
  • deceitful
    faithful, actual, just, authentic, sincere, genuine, naive, ingenuous, valid, forthright, real, loyal, reliable.
  • deceptive
    true.
  • devious
    artless, straightforward, straight, direct.
  • dirty
    nice, spotless, sterile.
  • false
    substantiated, right, accurate, known, precise, factual, correct.
  • foul
    fragrant, innocent, inoffensive, wonderful, pleasing, incorrupt.
  • secret
    unconcealed, revealed, clear, legal, legitimate, explicit, defined.
  • shady
    bright, definite, light, sure, reputable, certain.
  • underhanded
    fair, aboveboard, moral, ethical, trustworthy, good, principled, honest, truthful, frank, public, open, scrupulous.
  • undue
    fitting, reasonable, warranted, sensible, suitable, unprejudiced, proper, moderate, appropriate.
  • unreliable
    constant, responsible, stable, strong, steady, dependable.
  • unscrupulous
    lawful.