內啡素 Save Create a free account to save words Simplified: 内啡素 nèifēisù ㄋㄟˋ ㄈㄟ ㄙㄨˋ 男 女 endorphin Character by character 內(nèi)inside 啡(fēi)(used in loanwords for its phonetic value) 素(sù)raw silk Sign up for a free account to save words and review them A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0