unsuited

1. ADJ If someone or something is unsuited to a particular job, situation, or place, they do not have the right qualities or characteristics for it. (工作、情形、地方)不适合的[oft ADJ 'to' n/-ing]

He's totally unsuited to the job. 他完全不适合这份工作。

2. ADJ If two people, especially a man and a woman, are unsuited to each other, they have different personalities or interests, and so are unlikely to have a successful relationship. (男女个性、爱好)不合适的[oft ADJ 'to' n]

By the end of that first year, I knew how totally unsuited we were to each other. 第一年年末的时候，我就知道我们彼此完全不合适。