late 14c., "characterized by logic, based on logic," from Old French démonstratif (14c.), from Latin demonstrativus "pointing out, demonstrating," from past participle stem of demonstrare (see demonstration). Grammatical sense, "pointing out the thing referred to," is mid-15c. Meaning "given to outward expressions of feelings" is from 1819. Demonstrative pronoun is late 16c.
1. Some people are more demonstrative than others.
2. These figures are demonstrative of our progress.
3. He greeted us in a demonstrative manner.
4. We came from the English tradition of not being demonstrative.
5. Of love it may be said, the less earthly the less demonstrative.