输
shū · HSK 3
lose
🚚 车 (vehicle) + 俞 (shū phonetic) — vehicle hauls goods away, you lose them
输 combines 车 (cart/vehicle) with the phonetic 俞 (yú/shū). Originally meant to transport or send out — what leaves your hands is lost. Same shū sound as the 俞 component on the right.
输 — cart 車 + 兪 (phonetic)
输 is a phono-semantic compound. The radical 車 (cart/vehicle) gives the meaning, originally referring to transporting goods by cart. The component 兪 supplies the sound. From 'transport' it extended to 'send/deliver', then by metaphor to 'lose' (as in handing over stakes in a game).