1. (

• guess ,
• conjecture ,
• supposition ,
• surmise ,
• surmisal ,
• speculation ,
• hypothesis ,

) a message expressing an opinion based on incomplete evidence ;

2. (

• assumption ,
• supposition ,
• supposal

) a hypothesis that is taken for granted; "any society is built upon certain assumptions" ;

3. (

• supposition ,
• supposal ,

) the cognitive process of supposing ;