to believe especially on uncertain or tentative grounds
"Scientists supposed that large dinosaurs lived in swamps"
take for granted or as a given; suppose beforehand
"I presuppose that you have done your work"
require as a necessary antecedent or precondition
"This step presupposes two prior ones"
To take for granted; to conclude, with less than absolute supporting data; to believe.
"Suppose you're right about the storm being over, but we should still bring an umbrella just in case."
In plain English: To suppose means to think something is true even though you haven't seen proof yet.
"Suppose we meet for coffee at noon tomorrow?"
Usage: Use suppose when you form an opinion or conclusion based on limited evidence rather than certain facts. It often signals a tentative belief that may change if more information becomes available.
Suppose comes from the Middle English word supposen, which was borrowed from Old French and originally meant "to place underneath." The term entered English with a sense of putting something in position that later evolved to mean forming an idea or conclusion based on available information.