Demonstrate

March in protest; take part in a demonstration.
1. Thousands demonstrated against globalization during the meeting of the most powerful economic nations in seattle.
Synonym(s):
- March
Provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes.
1. His high fever attested to his illness.
2. The buildings in rome manifest a high level of architectural sophistication.
3. This decision demonstrates his sense of fairness.
Synonym(s):
- Attest
- Manifest
- Certify
- Evidence
Establish the validity of something, as by an example, explanation or experiment.
1. The experiment demonstrated the instability of the compound.
2. The mathematician showed the validity of the conjecture.
Synonym(s):
- Prove
- Show
- Establish
- Shew
Antonym(s):
- Disprove