substantive

Substantial; considerable.

Independent in existence or function; not subordinate.

Not imaginary; actual; real.

Of or relating to the essence or substance; essential.

Having a solid basis; firm.

Expressing or designating existence; for example, the verb to be.

Designating a noun or noun equivalent.

A word or group of words functioning as a noun.

To convert into or use as a substantive.

Betokening or expressing existence: as, the substantive verb.