Incorrect spelling, explanation: this form is a mistake because nothing in the etymology indicates that the word suppose should be spelled with just one -p letter. Looking back then, we can find out it was always written with the double consonant. Therefore, supose is an incorrect form and the correct one is: suppose.
Correct spelling, explanation: the infinitive to suppose comes from Middle English supposen, it was also borrowed from Old French supposer, equivalent to the prefix sub- (under) + poser (to place). As you can see, this word has a long history. The spelling of it depends on the construction of the words from which this one originates. It means that the only correct form is suppose, not supose.
Definition of suppose:
verb, to think that something is likely to be true
I suppose the teacher got sick and that’s why he hasn’t come.
Anna supposes that all the tickets to this concert were already sold.
Collocations with suppose:
Some most commonly used collocations include: wrongly suppose, and generally supposed.
Mark wrongly supposes that Emily finds him attractive.
This combination of qualities is generally supposed to be extremely rare.
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I was just looking for that info for a while. After 4 hours of constant googling, at last I found it on that English guide. Makes me wonder what’s the lack of Bing strategy which don’t show your type of quality web sites on top of results. Generally the top web sites are full of trash.
I love that dictionary, are these definitions based on official English dictionary? Would be really grateful if you could tell me.