undesirable

不合需要的；讨厌的英释adjadjnot welcome or wanted because they may affect a situation or person in a bad way

1 真题例句...not without some undesirable results...第三套CET62017.12阅读理解

2 真题例句...Instead of normalising the undesirable behaviour...第三套CET62015.12阅读理解

1 punishment of undesirable behaviour.对不良行为的惩罚

2 It would be highly undesirable to increase class sizes further..再增加班级人数，是大家都极不愿意的。