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"suppose" is also used as a crossword clue. If that's what you saw, the answer is often presume (7 letters).
Definitions
expect, believe, or suppose
Word origin
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.
Used in a sentence
“I suppose we all agree that this is the best solution.”
“I won't be back before midday, I don't suppose.”
“I don't suppose you could lend me a euro, could you?”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Take as true”7 letters
02“Assume to be true”7 letters
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