inconclusive
adj. B2 Upper Intermediate US //ˌɪnkənˈkɫusɪv// UK //ɪnkənklˈuːsɪv// in·con·clu·sive
adj. not leading to a clear result or decision. You use this when a test or a search does not give you a final answer.
adj. failing to provide a definitive result or lead to a firm conclusion. Often describes evidence, research findings, or the outcome of a competition.
The medical test results were inconclusive, so I need more exams.
Despite a week of intense investigation, the evidence remains inconclusive regarding the cause of the fire.
The initial study proved inconclusive, prompting the research team to redesign their methodology to account for previously overlooked environmental variables.
From in- + conclusive.
Usage
Often follows linking verbs such as 'be', 'remain', or 'prove'.