油然而生 yóu rán ér shēng 🔊 arising involuntarily (idiom); spontaneous + Keep this word Meanings yóu rán ér shēng arising involuntarily (idiom); spontaneousto spring up unbidden (of emotion) Its characters 油yóuoilHSK 4然ráncorrect而érandHSK 4生shēngto growHSK 4