› [T] to think that something is likely to be true, although you are not certain: [+ (that)] I presume that you've done your homework. be presumed dead/innocent, etc › If someone is presumed dead/innocent, etc, it seems very likely that they are dead/innocent, etc.
presume to do sth formal › to do something that you do not have the right or the skills to do: I certainly wouldn't presume to tell you how to do your job.