presumedcause

noun
UK /prɪˈzjuːmd kɔːz/
US /prɪˈzuːmd kɔːz/

The thing people think made something happen, even before they are sure.

The presumed cause of the fire was a broken wire, but the firefighters were still checking.


OTHER MEANINGS

2. In law, a reason that seems true enough for officials to start looking into something.

The judge said there was a presumed cause to search the building.

3. An early guess about why a problem happened, made before all the facts are known.

Scientists wrote down the presumed cause of the illness so they could test it later.

4. A cause that most people accept as true until someone shows it is wrong.

For years, the presumed cause of the strange noise was the old pipes.