v. sup·posed, sup·pos·ing, sup·pos·es
1. To assume to be true or real for the sake of argument or explanation: Suppose we win the lottery.
a. To believe, especially on uncertain or tentative grounds: Scientists supposed that large dinosaurs lived in swamps.
b. To consider to be probable or likely: I suppose it will rain.
3. To imply as an antecedent condition; presuppose: "Patience must suppose pain" (Samuel Johnson).
4. To consider as a suggestion: Suppose we dine together.
To imagine; conjecture.
[Middle English supposen, from Old French supposer, alteration (influenced by poser, to place) of Medieval Latin suppōnere, from Latin, to put under : sub-, sub- + pōnere, to place; see apo- in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.