unsuitable
/ʌnˈsuːtəbəl/ adjective B2- Not suitable.
From the library
It was a long time before she became at all reconciled to the idea of so unsuitable a match.
But she had never felt so strongly as now the disadvantages which must attend the children of so unsuitable a marriage, nor ever been so fully aware of the evils arising from so ill-judged a direction of talents--talents which, rightly used, might at least have preserved the respectability of his daughters, even if incapable of enlarging the mind of his wife.
Learn unsuitable in real texts
With a free account, hover any word in the library for its meaning, hear it read aloud, save words for review timed to your memory, and see how much of each book you already know.