推
スイ, お.す
conjecture, infer, guess, suppose, support
JLPT1 G6 S11 F507
As per 隹# (exert downward pressure) + 手 hand/action indicator → push/press down on at length → *infer*; *conjecture*; *suppose*; *assume* (← push one's ideas ← push forward ← press); *recommend*; *support* (← push forward a candidate).
[Full Kanji Etymology List]