suppose

Verb

Synonyms: say think opine imagine reckon guess speculate theorize theorise conjecture hypothesize hypothesise

WordNet 3.0

Verb (5)

express a supposition“Let us say that he did not tell the truth”“Let's say you had a lot of money--what would you do?”Synonyms: say
expect, believe, or suppose“I imagine she earned a lot of money with her new novel”“I thought to find her in a bad state”“he didn't think to find her in the kitchen”“I guess she is angry at me for standing her up”Synonyms: think opine imagine reckon guess
to believe especially on uncertain or tentative grounds“Scientists supposed that large dinosaurs lived in swamps”Synonyms: speculate theorize theorise conjecture hypothesize hypothesise hypothecate
take for granted or as a given; suppose beforehand“I presuppose that you have done your work”Synonyms: presuppose
require as a necessary antecedent or precondition“This step presupposes two prior ones”Synonyms: presuppose

Webster's Dictionary (GCIDE)

Suppose \Sup*pose"\, v. t. [imp. & p. p. Supposed; p. pr. & vb. n. Supposing.] [F. supposer; pref. sub- under + poser to place; -- corresponding in meaning to L. supponere, suppositum, to put under, to substitute, falsify, counterfeit. See Pose.]

1.To represent to one's self, or state to another, not as true or real, but as if so, and with a view to some consequence or application which the reality would involve or admit of; to imagine or admit to exist, for the sake of argument or illustration; to assume to be true; as, let us suppose the earth to be the center of the system, what would be the result? [1913 Webster]

Suppose they take offence without a cause.— Shak.[1913 Webster]

When we have as great assurance that a thing is, as we could possibly, supposing it were, we ought not to make any doubt of its existence.— Tillotson.[1913 Webster]

2.To imagine; to believe; to receive as true. [1913 Webster]

How easy is a bush supposed a bear!— Shak.[1913 Webster]

Let not my lord suppose that they have slain all the young men, the king's sons; for Amnon only is dead.— 2 Sam. xiii. 32.[1913 Webster]

3.To require to exist or to be true; to imply by the laws of thought or of nature; as, purpose supposes foresight. [1913 Webster]

One falsehood always supposes another, and renders all you can say suspected.— Female Quixote.[1913 Webster]

4.To put by fraud in the place of another. [Obs.] [1913 Webster]

Syn: To imagine; believe; conclude; judge; consider; view; regard; conjecture; assume. [1913 Webster]

Suppose \Sup*pose"\, v. i. To make supposition; to think; to be of opinion. --Acts ii. 15. [1913 Webster]

Suppose \Sup*pose"\, n. Supposition. [Obs.] --Shak. "A base suppose that he is honest." --Dryden. [1913 Webster]