without a basis in reason or fact;
"the allegations proved groundless"
- We hold that their proposal is unfounded.
- The claims are, I repeat, totally unfounded.
- In the end, such fears proved largely unfounded.
- This saying is completely unfounded.
- I have to say this fear is unfounded.
- The rumor that he was arrested was unfounded.
Her concerns about being typecast in..urban films seem to be unfounded.出自：Premiere