擦る

する · suru · JLPT N3 · verb-godan

to rub

🧽 Suru sounds like sore-oo: rub too long and the skin chafes sore

Same sound as する (to do), so the kanji 擦 tells them apart. 擦 also appears in 摩擦 (masatsu, friction). You also use it for striking a match: マッチを擦る. It is more often read こする (kosuru), the everyday word for rub or scrub.

擦 — hand radical 扌 + 察 (chá, inspect)
擦 is a phono-semantic compound. The hand radical 扌 indicates the meaning — an action done with the hand, namely rubbing, wiping, or scrubbing. The right side 察 supplies the sound, giving the modern reading cā. The character is relatively late and has always centered on the idea of friction by hand.

こする · kosuru · JLPT N2 · verb-godan

to rub

🧽 扌 hand + 察 examine: rub a surface with your hand to examine or wear it down

Sounds like KOS-ru, as in 'cos, you rub.' Rubbing glass with a hand or abrasive leaves it dull, which is where the 'to frost' sense comes from.

擦 — hand radical 扌 + 察 (chá, inspect)
擦 is a phono-semantic compound. The hand radical 扌 indicates the meaning — an action done with the hand, namely rubbing, wiping, or scrubbing. The right side 察 supplies the sound, giving the modern reading cā. The character is relatively late and has always centered on the idea of friction by hand.

かする · kasuru · JLPT N1 · verb-godan

to rub

擦 — hand radical 扌 + 察 (chá, inspect)
擦 is a phono-semantic compound. The hand radical 扌 indicates the meaning — an action done with the hand, namely rubbing, wiping, or scrubbing. The right side 察 supplies the sound, giving the modern reading cā. The character is relatively late and has always centered on the idea of friction by hand.

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