uncannily

adv

1. In an uncanny manner.

   “The traveler very easily failed to notice one among the normal bushes and undergrowth, and the moment he was in range the venomous sting would slash out. Even the regular inhabitant of such a district found it difficult to detect a motionless triffid cunningly lurking beside a jungle path. They were uncannily sensitive to any movement near them, and hard to take unawares.”