Synonyms for On the up and up:

• adj.

  •decent (adjective)
  • conforming,
  • fit,
  • undefiled,
  • immaculate,
  • comely,
  • pure,
  • virtuous,
  • stainless,
  • befitting,
  • decorous,
  • unblemished,
  • honorable,
  • suitable,
  • polite,
  • moral,
  • nice,
  • fitting,
  • good,
  • right,
  • delicate,
  • Comme Il Faut,
  • becoming,
  • noble,
  • trustworthy,
  • upright,
  • worthy,
  • seemly,
  • prudent,
  • correct,
  • mannerly,
  • untarnished,
  • proper,
  • chaste,
  • straight,
  • continent,
  • standard,
  • presentable,
  • modest,
  • approved,
  • reserved,
  • clean,
  • spotless.
  •honest (adjective)
  • authentic,
  • trusty,
  • veracious,
  • sincere,
  • frank,
  • above-board,
  • just,
  • reliable,
  • real,
  • direct,
  • equitable,
  • outright,
  • genuine,
  • straightforward,
  • fair and square,
  • open,
  • high-minded,
  • fair,
  • conscientious,
  • plain,
  • scrupulous,
  • forthright,
  • unfeigned.
  •permissible (adjective)
  • bearable,
  • permitted,
  • acceptable,
  • all right,
  • tolerable,
  • endorsed.
  •proper (adjective)
  • kosher.
  •rightful (adjective)
  • applicable,
  • merited,
  • holding water,
  • moralistic,
  • apt,
  • principled,
  • rightful,
  • deserved,
  • requisite,
  • twenty-four carat,
  • right-minded.
  •true (adjective)
  • veridical,
  • truehearted,
  • undistorted,
  • high-principled,
  • liege.
  •truthful (adjective)
  • truth-telling,
  • plainspoken.
  •veracious (adjective)
  • undeceptive,
  • on the line,
  • straight-arrow,
  • on line,
  • straightarrow.
  •virtuous (adjective)
  • clean-living,
  • without reproach,
  • in the clear.

• adv.

  •aboveboard (adverb)
  • honestly,
  • Veraciously,
  • openly,
  • truthfully,
  • Overtly,
  • truly,
  • on the up and up,
  • frankly.

• adv

  •aboveboard (adverb)
  • on up and up.

• Other synonyms:

  •
  • enhanced,
  • Furbished,
  • improved.
  •
  • compensatory,
  • second-generation,
  • dressed-up.
  •
  • remedial.
  •
  • corrective.
  •
  • new.

Antonyms for On the up and up:

• adj.

  • decent
    indecent, unrespectable, inappropriate, unsuited, unsuitable, poor.
  • honest
    dishonest, untrustworthy, false, misleading, treacherous, fraudulent, untruthful, deceptive.
  • lawful
    illegitimate, prohibited, illegal, unlawful, taboo, illicit.
  • legal
    wrong.
  • legitimate
    unwarranted, invalid.
  • permissible
    unpermissible.
  • rightful
    wrongful, incorrect.

• adv.

  • aboveboard
    devious, shady, underhanded, lying, deceitful.
  • objectively
    subjectively, emotionally.