The phrase "ultimate verdict" means the final decision or judgment that is made after considering all the facts and evidence. It is the final and most important decision that determines the outcome of a situation or case. Full definition
In Jerusalem the new movement will present itself to the authorities of the country; in Jerusalem the ultimate verdict must be pronounced; in Jerusalem the hopes of the Kingdom of God will be realized. (religion-online.org)
Although the ultimate verdict on inflation is still out, we believe both articles represent important and legitimate scientific viewpoints, so we invited the authors to present their ideas to readers directly. (scientificamerican.com)
Now comes its final test: the close scrutiny of the Autocar road test timing gear and the associated road and track mileage needed to inform our ultimate verdict. (autocar.co.uk)