1. His argument was completely baseless.
他的论点完全没有依据。

2. The report is filled with baseless rumors.
这份报告充满了毫无根据的谣言。

3. She rejected the baseless accusation immediately.
她立刻驳回了毫无根据的指控。

A: That accusation seems baseless.
A：那个指控似乎毫无根据。

B: I agree, there is no evidence at all.
B：我同意，根本没有任何证据。

1) 没有事实依据

2) 缺乏证据支撑

3) 不可靠的或虚假的信息

1. 缺乏根据的，毫无事实依据的

e.g. He made a baseless claim about the incident.
他对事件提出了毫无根据的主张。

adjective

1. Without any foundation or evidence; not based on facts.

Synonym: unfounded, groundless