godan verb (-ru), intransitive verb
wonder; puzzle over; feel suspicious about
Expresses a feeling of doubt, suspicion, or unease about something that seems off. Often used when something doesn't add up or feels questionable.
彼の説明に少し訝るところがあった。
There was something about his explanation that made me wonder.
その話を聞いて、私
Hearing that story, I felt inwardly suspicious.