Simple Definition of supposition
: an idea or theory that you believe is true even though you do not have proof
Examples of supposition in a sentence
a supposition that proved correct
This is just idle supposition.
Origin and Etymology of supposition
Middle English supposicioun, from Anglo-French supposicion, from Late Latin supposition-, suppositio, from Latin, act of placing beneath, from supponere
First Known Use: 15th century
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