surmise
🇺🇸
/sərˈmaɪz/
🇬🇧
/səˈmaɪz/
to believe something is true based on the information you have, even though you are not certain
I surmise that she left the party early because she felt sick.
a belief you have that something is true even though you do not have complete proof
Her early exit was just a surmise based on the look on her face.