adjectivally

adv

adjectivally

adv

/ˌæd͡ʒɛkˈtaɪvəli/

Etymology From adjectival + -ly.

1

As, or in the manner of, an adjective.

In that sense, the word acts adjectivally, whereas in most cases it acts adverbially.
...it was observed that overt definite pronouns may also function adjectivally in various languages...1994, Alexander Grosu, “Three Studies in Locality and Case”, in Google Books:

1 more example

All attributive adjectives function adjectivally; an attributive adjective cannot function substantivally.1999, William D. Mounce, “Basics of Biblical Greek”, in Google Books:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.