スイ, お.す

conjecture, infer, guess, suppose, support

JLPT1 G6 S11 F507

As per 隹# (exert downward pressure) + 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]