Definify.com

Webster 1913 Edition

adv.

In a substantive manner; in substance; essentially.

(Gram.)

As a substantive, name, or noun;

as, an adjective may be used

substantively

adv.

In substance; essentially.

In grammar, as a name or noun. An adjective or pronoun may be used substantively.

substantively ‎(comparative more substantively, superlative most substantively)

in a substantive manner