Cantofish: succeed at the first try (idiom); easy as pie; one can do it at once
MDBG: to succeed at the first try (idiom); easy as pie; one can do it at once
LDC:
CDict: '
Click icons for complete source definitions (not available on mobile). icon in each entry gives source attribution. Want to improve this definition? Check to see if 一蹴可几 is already in CC-CEDICT. If not, you can add it. (Why?)