咬 ㄧㄠ ˇ yǎo 牙 ㄧㄚ ˊ yá 切 ㄑㄧㄝ ˋ qiè 齿 ㄔ ˇ chǐ 咬 ㄧㄠ ˇ yǎo 牙 ㄧㄚ ˊ yá 切 ㄑㄧㄝ ˋ qiè 齒 ㄔ ˇ chǐ gnashing one's teeth (idiom); displaying extreme anger fuming with rage between gritted teeth