inscrutable

adj. 高深莫测的，神秘的

inquisitively, inquisitiveness, inquisitor, inquisitorial, inquisitorially, inroad, inrush, insalubrious, insalubrity, insane, insane asylum, insanely, insanitary, insanity, insatiable, insatiably, insatiate, inscribe, inscription, inscrutability, inscrutably, insect, insect-eating, insecticidal, insecticide, insectivore, insectivorous, insecure, insecurely, insecurity, inseminate, insemination, insensate, insensately, insensibility, insensible, insensibly, insensitive, insensitively, insensitivity,