1. Noun

   1.

   substance; essence

2. Noun which may take the genitive case particle 'no'

   2.

   substantive; substantial; essential; real (e.g. interest rate)

3. Adverb (fukushi)

   3.

   in essence; in effect; essentially; effectively

Example sentences

• 実質的に全ての家庭にはテレビがある。

  Practically every family has a TV.

• 進化という科学的真理が反対しようもないほど確証されるもので、実質的に論駁できない。

  The scientific truth of evolution is so overwhelmingly established, that it is virtually impossible to refute.