acknowledging, alive, alive to, all-knowing, apperceptive, appercipient, appreciative, appreciative of, apprehending, apprehensive, apprised of, au courant, awake, awake to, aware, aware of, behind the curtain, behind the scenes, beholden, cognizant of, comprehending, conscious, conscious of, crediting, grateful, hep to, impressible, impressionable, impressive, in the know, in the secret, indebted to, informed of, insightful, intelligent, knowing, knowledgeable, let into, mindful, mindful of, much obliged, no stranger to, obliged, omniscient, on to, perceptive, percipient, perspicacious, prehensile, privy to, receptive, sagacious, seized of, sensible, sensible of, sensible to, sensile, sensitive to, sentient, shrewd, streetwise, susceptible, susceptive, thankful, undeceived, under obligation, understanding, wise, wise to, witting