suppose

Etymology

From Middle English supposen, borrowed from Old French supposer, equivalent to prefix sub- (“under”) + poser (“to place”); corresponding in meaning to Latin supponere (“to put under, to substitute, falsify, counterfeit”), suppositum. See pose.

verb

1. (transitive) To take for granted; to conclude, with less than absolute supporting data; to believe.
   I suppose we all agree that this is the best solution.
   ‘No,’ said Luke, grinning at her. ‘You're not dull enough! […] What about the kid's clothes? I don't suppose they were anything to write home about, but didn't you keep anything? A bootee or a bit of embroidery or anything at all?’ 1963, Margery Allingham, chapter 15, in The China Governess
2. (transitive) To theorize or hypothesize.
   Suppose that A implies B and B implies C. Then A implies C.
   Of all the queer collections of humans outside of a crazy asylum, it seemed to me this sanitarium was the cup winner. […] When you're well enough off so's you don't have to fret about anything but your heft or your diseases you begin to get queer, I suppose. 1913, Joseph C. Lincoln, chapter 5, in Mr. Pratt's Patients
   Just what is supposed to be wrong with the pursuit of fame is not always made clear. Plato disapproved of competition for praise on the grounds that it would tempt the great to bend to the will of the crowd. It is hard to argue with that, and social degradation remains a fear. 2013-09-06, David Cox, “Celebrity rules even Hawking's universe”, in The Guardian Weekly, volume 189, number 13, page 30
3. (transitive) To imagine; to believe; to receive as true.
4. (transitive, obsolete) To reckon to be, to account or esteem as.
5. (transitive) To require to exist or to be true; to imply by the laws of thought or of nature.
   Purpose supposes foresight.
   One falsehood always supposes another, and renders all you can say suspected. 1752, Charlotte Lennox, The Female Quixote
6. (transitive) To put by fraud in the place of another.