危惧 の訳語→ afraid concern horror misgiving reservation
疑い の訳語→ doubt recognition suspicious
疑問 の訳語→ interrogatory mystery problem question warning
思いつき の訳語→ brainwave hit idea impulse thing
思惑 の訳語→ intent motive perspective plan speculation
推理 の訳語→ arithmetic assertion calculate conjecture guess hypothesis inference theory