1. A statement or declaration that is vague, unclear, or lacking specific details; a statement that does not clearly define or specify something
The witness gave an indefinite statement about what he saw at the scene.
A testemunha deu uma afirmação indefinida sobre o que viu no local.
2. In logic and linguistics, a statement that uses indefinite pronouns or articles and does not refer to a specific individual or particular instance
The sentence 'Someone left the door open' is an indefinite statement.
A sentença 'Alguém deixou a porta aberta' é uma afirmação indefinida.