ingenious

a.机敏的；天才的

informative, informed, informer, infra, infra dig, infra-, infra-red, infraction, infrared, infrastructure, infrequency, infrequent, infrequently, infringe, infringement, infuriate, infuriating, infuriatingly, infuse, infusion, ingeniously, ingenue, ingenuity, ingenuous, ingenuously, ingenuousness, ingest, ingle-nook, inglorious, ingloriously, ingoing, ingot, ingrain, ingrained, ingrate, ingratiate, ingratiating, ingratiatingly, ingratiation, ingratitude,