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1. Express a supposition
   - say
    
2. Expect to be true; believe
   - think, opine, imagine, reckon, guess, daresay [informal], dare say [informal]
    
3. To believe especially on uncertain or tentative grounds
   "Scientists supposed that large dinosaurs lived in swamps";
   - speculate, theorize, theorise [Brit], conjecture, hypothesize, hypothesise [Brit], hypothecate
    
4. Take for granted or as a given; expect beforehand
   "I suppose that you have done your work";
   - presuppose
    
5. (logic) require as a necessary antecedent or precondition
   - presuppose

Derived forms: supposing, supposed, supposes

Type of: anticipate, assume, expect, imply, muse, presume, speculate, take for granted

Encyclopedia: Suppose