De*mon"stra*tive (?), a. [F. démonstratif, L. demonstrativus.] 1. Having the nature of demonstration; tending to demonstrate; making evident; exhibiting clearly or conclusively. "Demonstrative figures." Dryden.

An argument necessary and demonstrative.

Hooker.

2. Expressing, or apt to express, much; displaying feeling or sentiment; as, her nature was demonstrative.

3. Consisting of eulogy or of invective. "Demonstrative eloquence." Blair.

Demonstrative pronoun(Gram.), a pronoun distinctly designating that to which it refers.

De*mon"stra*tive, n. (Gram.) A demonstrative pronoun; as, "this" and "that" are demonstratives.