Synonyms for On to:

• adj.

  •aware (adjective)
  • attentive,
  • receptive,
  • alert,
  • GOGO,
  • heedful,
  • plugged in,
  • au courant,
  • sharp,
  • in the picture,
  • informed,
  • awake,
  • know-how,
  • go-go,
  • Grounded,
  • sentient,
  • sensible,
  • in the know,
  • knowhow,
  • tuned in,
  • acquainted,
  • wise,
  • Familiar,
  • perceptive,
  • on to,
  • apprehensive,
  • knowing,
  • on the beam,
  • latched on,
  • alive,
  • up on,
  • savvy,
  • Appraised,
  • know what's what,
  • Apprised,
  • appreciative,
  • wisest,
  • know the score,
  • wise to,
  • enlightened,
  • wised up.
  •cognizant (adjective)
  • conversant,
  • versed,
  • hip to,
  • knowledgeable,
  • judicious.
  •conscious (adjective)
  • seeing,
  • apperceptive,
  • known,
  • keen,
  • discerning,
  • Remarking,
  • Noticing,
  • felt,
  • observing,
  • vigilant,
  • Noting,
  • responsive,
  • Perceiving,
  • assured,
  • certain,
  • Recognizing,
  • watchful,
  • aesthetic,
  • understanding,
  • sure.
  •mindful (adjective)
  • cagey,
  • thoughtful,
  • wary,
  • solicitous,
  • cautious,
  • on the ball,
  • chary,
  • conscientious,
  • regardful,
  • respectful,
  • careful.
  •Other relevant words: (adjective)
  • sensitive to,
  • percipient,
  • in on,
  • down with,
  • on one's toes,
  • sophisticated,
  • wordless,
  • taken for granted,
  • unstated,
  • with it,
  • jet-set,
  • aware,
  • witting,
  • know ins and outs,
  • with eyes peeled,
  • world-weary,
  • in fashion,
  • able to recognize,
  • hep to,
  • Observative,
  • observant,
  • on the job,
  • understood,
  • down pat,
  • stagier,
  • uptown,
  • alive to,
  • streetwise,
  • conscious,
  • stagy,
  • in right mind,
  • been around,
  • be on,
  • on toes,
  • mindful,
  • laid back,
  • know all the answers,
  • switched on,
  • supraliminal,
  • couth,
  • worldly wise,
  • stagiest,
  • mondaine,
  • know the answers,
  • be up on.
  •sophisticated (adjective)
  • refined,
  • cynical,
  • disenchanted,
  • citified,
  • seasoned,
  • experienced,
  • adult,
  • bored,
  • svelte,
  • schooled,
  • studied,
  • jaded,
  • suave,
  • cultivated,
  • practiced,
  • in,
  • smooth,
  • worldly,
  • practical,
  • urbane,
  • mature,
  • skeptical,
  • well-bred,
  • artificial,
  • disillusioned.
  •understood (adjective)
  • pat,
  • Roger,
  • accepted,
  • inferential,
  • presumed,
  • unspoken,
  • implied,
  • unexpressed,
  • Inferred,
  • tacit,
  • undeclared,
  • axiomatic,
  • unsaid,
  • appreciated.
  •with it (adjective)
  • mod,
  • in vogue,
  • latest,
  • turned on,
  • trendy,
  • chic.

• Other synonyms:

  •
  • cognizant,
  • hip.

Antonyms for On to:

• adj.

  • aware
    unaware, insensitive, unconscious, ignorant.
  • cognizant
    unknowledgeable, uninformed, unwitting, unfamiliar.
  • conscious
    impassive, unresponsive, indifferent, unmindful, senseless.
  • mindful
    inattentive, heedless, Absent-minded, careless.
  • sophisticated
    naive, unsophisticated, uncultivated, unrefined, uncultured.
  • understood
    written, spoken, Explained, explicit.