1. 没有理由的：unfortunate 不幸的 | unfounded 没有理由的 | unfreeze 融化
2. 无根据的：Exclusively:仅仅 | Unfounded:无根据的 | Contradiction:反驳
3. 没有事实根据的：deliberate 故意的 深思熟虑的 | thriller 惊险小说,戏剧 | unfounded 没有事实根据的
4. 无理由的/无稽的：unfortunately /不幸地/不巧/不幸/不幸的是/很遗憾/ | unfounded /无理由的/无稽的/ | unfreeze /溶化/使解冻/解除限制/
1. 无事实根据的；没有理由的
If you describe a rumour, belief, or feeling as unfounded, you mean that it is wrong and is not based on facts or evidence.
e.g. There were unfounded rumours of alcohol abuse...
一些毫无根据的酗酒谣言在流传。
e.g. The allegations were totally unfounded...
这些指控完全没有事实根据。
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2. unfounded的解释
adj
1. without a basis in reason or fact
e.g. baseless gossip
the allegations proved groundless
idle fears
unfounded suspicions
unwarranted jealousy