1也许
英语:maybe, might, perhaps, probably
西班牙语:acaso, quizá(s)
2偶然
英语:by accident, by chance, contingency, hap, haphazard, incidentally
法语:fortuit, accidentel ～性 contingence
德语:Zufall, aleatorisch, gelegentlich, unbeabsichtigt, zufällig
葡萄牙语:ocasional, acidental, fortuidade, fortuito, contingente, contingência, acidente
西班牙语:acaso, azar, casualidad, causalidad, fortuna
3绝不
西班牙语:absolutamente, nada
4未必
英语:may not, not necessarily
5碰巧
英语:as luck would have it, at it happens, by chance
德语:durch Zufall, zufällig, zustoßen, gelegentlich