Synonyms for In substance:

• adv

  •for all practical purposes (adverb)
  • virtually.
  •nearly (adverb)
  • in neighborhood.
  •Other relevant words: (adverb)
  • in essence,
  • at the bottom,
  • substantially,
  • at bottom,
  • basically,
  • firstly,
  • intrinsically.

• adv.

  •basically (adverb)
  • mostly,
  • radically,
  • inherently,
  • at heart,
  • primarily.
  •nearly (adverb)
  • roughly,
  • well-nigh,
  • nearly,
  • most,
  • in effect,
  • round,
  • about,
  • in the ballpark,
  • CIRCA,
  • within a little,
  • nearabout,
  • roundly,
  • closely,
  • pretty near,
  • some,
  • practically,
  • wellnigh,
  • all but,
  • give or take a little,
  • not quite,
  • somewhere,
  • approximately,
  • close but no cigar,
  • as good as,
  • in the neighborhood,
  • just about,
  • more or less,
  • approaching,
  • much,
  • upwards of.
  •substantially (adverb)
  • in reality,
  • in fact,
  • considerably,
  • mainly,
  • really,
  • heavily,
  • extensively,
  • largely,
  • materially.
  •virtually (adverb)
  • implicitly,
  • fundamentally,
  • not actually,
  • effectually,
  • guesstimate,
  • morally,
  • around,
  • something like,
  • not absolutely,
  • for all intents and purposes,
  • in all but name.

• n.

  •Other relevant words: (noun)
  • essentially.

• Other synonyms:

  •Other relevant words (noun):
  • in the main,
  • in a nutshell,
  • Indued,
  • in short,
  • in a capsule,
  • in brief,
  • in outline,
  • per se.

Antonyms for In substance:

• adv.

  • basically
    extra, inessentially, additionally.
  • substantially
    slightly, insignificantly.