unsuspected
🇺🇸
/ˌʌnsəˈspektɪd/
🇬🇧
/ˌʌnsəˈspektɪd/
Something that is not known or thought about before it happens or is discovered.
The detective discovered an unsuspected clue in the case.
侦探在案件中发现了一个未被怀疑的线索。