勉
ベン, つと.める, ひこ, やつ

exertion, endeavour, encourage, strive, make effort, diligent

JLPT4 G3 S10 F1066

As per 免# (draw out of/away from) + 力 power/energy → *make great efforts* in drawing out of or away from (compare 敏 and 僶) → *encourage*.

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