Emily Dickinson Lexicon

SUP-POSE, v.t. [suppo'ze; Fr. supposer; L. suppositus, suppono; It. supporre; Sp. suponer; sub and pono, to put.]

1. To lay down or state as a proposition or fact that may exist or be true, though not known or believed to be true or to exist; or to imagine or admit to exist, for the sake of argument or illustration. Let us suppose the earth to be the center of the system, what would be the consequence? When we have as great assurance that a thing is, as we could possibly, supposing it were, we ought not to doubt of its existence. – Tillotson.
2. To imagine; to believe; to receive as true. Let not my lord suppose that they have slain all the young men, the king's sons; for Amnon only it dead. – 2 Sam. xiii.
3. To imagine; to think. I suppose, / If our proposals once again were heard … – Milton.
4. To require to exist or be true. The existence of things supposes the existence of a cause of the things. One falsehood supposes another, and renders all you say suspected. – Female Quixote.
5. To put one thing by fraud in the place of another. [Not in use.]