1. one who supposes or assumes something
Usage: rare

Examples

• The supposer believed the meeting would be cancelled due to weather.
• As a frequent supposer of worst-case scenarios, she always carried an umbrella.
• The detective was more than just a supposer; he gathered evidence to support his theories.
• Every supposer in the group had a different theory about what happened.
• The supposer’s assumptions proved to be incorrect when the facts emerged.