1. incapable of being justified or explained

2. without a basis in reason or fact;

   "baseless gossip"
   "the allegations proved groundless"
   "idle fears"
   "unfounded suspicions"
   "unwarranted jealousy"
   

3. lacking justification or authorization;

   "desire for undue private profit"
   "unwarranted limitations of personal freedom"
   

1.无端的；无正当理由的
If you describe something asunwarranted, you are critical of it because there is no need or reason for it.

unwarranted的解释

e.g. Any attempt to discuss the issue of human rights was rejected as anunwarranted interference in the country's internal affairs...
任何讨论人权问题的尝试都会被以无端干预该国内政为由加以拒绝。
e.g. He accused the police of usingunwarranted brutality.
他指控警方无端施暴。

1. 未经保证的：unviersal incinerator 通用焚烧炉 |unwarranted 未经保证的 | unwashed 未洗涤的

2. 无根据的：unwarrantable 不允许的 |unwarranted 无根据的 | unwary 不注意的

3. 未获保证的：unwarrantable 不能保证的 |unwarranted 未获保证的 |unwarranted 未获承认的