1. 想象的：supposition 假定 | suppositional 想象的 | supposititious 冒充的

2.

2. 推想的：supposition 推想 | suppositional 推想的 | supposititious 偷偷掉换的

3. 想象的/推测的/推想的：supposition /想象/推测/推想/ | suppositional /想象的/推测的/推想的/ | supposititious /偷偷掉换的/冒充的/想象的/假的/私生的/

4. 想像的; 假定的 (形)：supposition 假定; 推测; 假设 (名) | suppositional 想像的; 假定的 (形) | supposititious 假的; 假定的; 想像的; 推测的 (形)

1. based primarily on surmise rather than adequate evidence

    e.g. theories about the extinction of dinosaurs are still highly conjectural
           the supposed reason for his absence
           suppositious reconstructions of dead languages
           hypothetical situation

    Synonym: conjecturaldivinatoryhypotheticalhypotheticsupposedsuppositioussupposititious