Synonyms for Ostensibly:

• adv

  •outwardly (adverb)
  • as far as one can see,
  • the eye.

• adv.

  •apparently (adverb)
  • for all intents and purposes,
  • supposedly,
  • on the surface,
  • sensibly,
  • on the face,
  • officially,
  • at first blush,
  • to the eye.
  •doubtless (adverb)
  • no ifs ands buts,
  • un equivocally,
  • in-disputably,
  • in disputably,
  • un-equivocally,
  • un questionably,
  • un-questionably.
  •evidently (adverb)
  • un mistakably,
  • in controvertibly,
  • un-mistakably,
  • in contestably,
  • in-controvertibly,
  • in-contestably.
  •superficially (adverb)
  • casual eye,
  • to casual eye,
  • the casual eye.

• n.

  •
  • on paper,
  • to all intents and purposes,
  • not necessarily,
  • purportedly,
  • the jury is still out (on),
  • professed,
  • in theory,
  • for show.
  •
  • mingly,
  • surface.
  •on the face of it (noun)
  • face.

• Other synonyms:

  •
  • externally.
  •
  • show.
  •Other relevant words:
  • markedly,
  • distinct,
  • possibly,
  • demonstrable,
  • synthetically,
  • clear,
  • obvious,
  • ostensible,
  • conspicuous,
  • obviously,
  • pronounced,
  • strikingly,
  • outstanding,
  • reasonably,
  • noticeably,
  • erroneously,
  • explicit,
  • presumably,
  • notably,
  • boldly,
  • notoriously,
  • presumptively,
  • as a pretext,
  • marked,
  • definitely,
  • fictitiously,
  • undeniable,
  • pronouncedly,
  • blatantly,
  • flagrantly,
  • as a cover,
  • palpable,
  • overt,
  • feasibly,
  • naked,
  • palpably,
  • distinctly,
  • unmistakable,
  • staringly,
  • demonstrably,
  • eminent,
  • in appearance,
  • spuriously,
  • obtrusively,
  • apparent,
  • avowedly,
  • glaringly,
  • putatively,
  • prominently,
  • conceivably,
  • decisive,
  • glaring,
  • plainly,
  • outstandingly,
  • extrinsically,
  • believably,
  • falsely,
  • apologetic,
  • prominent,
  • evident,
  • as an excuse,
  • manifest,
  • Saliently,
  • factitiously,
  • plain,
  • conspicuously,
  • patent,
  • untruly,
  • in name only,
  • clearly,
  • nominally,
  • flagrant,
  • as it seems,
  • bogusly,
  • prima facie,
  • visible,
  • alleged,
  • pretended,
  • artificially,
  • Arrantly,
  • unnaturally.

Paraphrases for Ostensibly:

• Equivalence

  • Adverb
    purportedly.

• Independent

  • Adverb
    allegedly, reportedly, conspicuously, superficially, manifestly, evidently, blatantly, obviously, outwardly, presumably, visibly, demonstrably, clearly, formally, officially, patently, markedly, admittedly, significantly, considerably, substantially, plainly, noticeably, self-evidently, notoriously.

• Other Related

  • Adverb
    supposedly, apparently, seemingly, ostentatiously.

Antonyms for Ostensibly:

• adv.

  • apparently
    improbably, unlikely, obscurely.
  • Other antonyms:
    implausibly, incredibly, impossibly.