Synonyms for Imagine:

n.

fabricate, think of, harbor, devise, dramatize, fancy, conjure up, be a great/firm believer in something, believe in, visualize, formulate, dream, nurture, make up, image, picture, conceptualize, recognize. heavens above, you don't say, is that a fact?, feature, you would not believe, thoughts, now I've seen everything/it all, Well, I never, funnily enough, actually, vision, of all things/people/places, who would have thought...?. think up, read into, have visions of (doing) something, visualization. imagine (noun)
ideate, reckon, think, guess, suppose, opine, envisage, conceive of.

v.

assume, deduce (verb)
reckon, think, apprehend, suspect, suppose, surmise, gather, guess, presume, conjecture, infer, expect.
dream up, conceive (verb)
conceptualize, brainstorm, nurture, figure, picture, fantasize, fabricate, invent, conjure up, envision, harbor, form, visualize, envisage, fancy, devise, perceive, plan, vision, image, think of, think up, make up, feature, create.
expect (verb)
envisage, deduce, assume, dread, gather, surmise, infer, presuppose, presume, suspect, forebode, await, apprehend, expect, anticipate, foreknow, foresee.
imagine (verb)
ideate, suppose, invent, conceive, theorize, fantasize, observe, perceive, create, brainstorm, design, opine, plan.
prototype (verb)
shape, figure, prototype, model, form.
suppose (verb)
prophesy, conjecture, philosophize, hypothesize, guess.

Other synonyms:

read into, believe in, visualize, think up, conceptualize. daydream, recognize, fancy. picture. vision. make up. expect
foreknow.
think
ideate.

Usage examples for imagine

  1. I imagine indeed, that by now he has dropped the whole business. – The Case of Richard Meynell by Mrs. Humphrey Ward
  2. I could not imagine what she was doing there. – Kent Knowles: Quahaug by Joseph C. Lincoln
  3. For it seemed impossible to imagine that anything serious could have happened to her. – The Camp Fire Girls Across the Seas by Margaret Vandercook