Synonyms for Give high sign:

• v.

  •alert (verb)
  • notify,
  • put on guard,
  • alarm,
  • inform,
  • tip off,
  • flag,
  • wave flag,
  • Forewarn,
  • tip,
  • give the high sign,
  • signal.
  •caution (verb)
  • alert,
  • exhort,
  • give the lowdown on,
  • pull one's coat,
  • put one wise,
  • admonish,
  • wave a red flag,
  • wise one up,
  • urge.
  •confirm (verb)
  • check,
  • affirm,
  • verify,
  • establish,
  • endorse,
  • certify,
  • support,
  • approve,
  • vouch,
  • sanction,
  • attest,
  • debunk,
  • sign,
  • explain,
  • corroborate,
  • bear out,
  • justify,
  • warrant,
  • bless,
  • thumbs up,
  • okay,
  • settle,
  • back,
  • witness,
  • authenticate,
  • underpin,
  • check out,
  • buy,
  • uphold,
  • substantiate.
  •forewarn (verb)
  • apprise,
  • dissuade,
  • give fair warning,
  • telegraph,
  • forbode,
  • advise,
  • put a bug in one's ear,
  • Premonish,
  • portend.
  •signalize (verb)
  • gesticulate,
  • indicate,
  • wave,
  • motion,
  • use one's hands,
  • act out,
  • use sign language,
  • pantomime,
  • mime.
  •warn (verb)
  • forearm,
  • make aware,
  • give warning,
  • hint,
  • clue,
  • post,
  • reprove,
  • fill in,
  • counsel,
  • remind,
  • prepare,
  • threaten,
  • summon,
  • suggest,
  • enjoin,
  • address,
  • instruct,
  • direct,
  • prompt,
  • cry wolf,
  • recommend,
  • clue in,
  • deprecate,
  • order,
  • advocate,
  • tell,
  • wise up,
  • remonstrate,
  • prescribe,
  • forbid,
  • acquaint,
  • lay it out,
  • caution,
  • predict,
  • guide.

• Other synonyms:

  •Other relevant words:
  • circumstantiate,
  • confirm,
  • lap up,
  • make good,
  • make sure,
  • rubberstamp,
  • size up,
  • subscribe,
  • Circumstantiated,
  • double check,
  • double checked,
  • double checking,
  • double-checks,
  • sign off on,
  • made good,
  • double-check,
  • double-checked,
  • give go-ahead,
  • give green light,
  • give high sign,
  • give nod,
  • give stamp of approval,
  • give the go-ahead,
  • give the nod,
  • lapped up,
  • made sure,
  • making good,
  • rubber stamped,
  • rubber-stamps,
  • signed on,
  • signing on,
  • under pin,
  • rubber-stamp,
  • sizing up.

Antonyms for Give high sign:

• v.

  • confirm
    cancel, contradict, oppose, disprove, veto, annul, void, invalidate, destroy.