• 訝るいぶかる

  to wonder, to puzzle oneself about, to feel anxious about, to suspect, to doubt

• 怪訝けげん

  puzzled, perplexed, quizzical, dubious, suspicious

• 訝しむいぶかしむ

  to be suspicious of, to be doubtful of, to be dubious of

• 訝しいいぶかしい

  suspicious, doubtful, dubious, questionable, fishy

• 訝しげいぶかしげ

  quizzical, puzzled, inquisitive, suspicious, doubtful