










丁一卯二 is a Chinese idiom (chengyu) meaning “Perfectly aligned and secure”. Definite and reliable, leaving no room for error. Literally, “Tenon one, mortise two”.

Chinese and English fill-in vocabulary worksheets
Open the tool →
Printable tracing sheets with a QR learning companion
Open the tool →
Picture and word Bingo for your class
Open the tool →
Choose character parts and animate their colors, together or in stroke order
Open the tool →丁一卯二 (dīng yī mǎo èr) is a Chinese idiom (chengyu) meaning “Perfectly aligned and secure”.
丁一卯二 is pronounced dīng yī mǎo èr in Mandarin Chinese.
Literally, 丁一卯二 means “Tenon one, mortise two”. It is used to mean “Perfectly aligned and secure”.
丁:通“钉”,这里指榫头;卯:器物上接榫头的孔眼。丁卯合位,一丝不差。形容确实、牢靠。