accommodating, accommodative, active, advertent, agog, agreeable, alert, alive, alive to, all-knowing, all ears, all eyes, apperceptive, appercipient, appreciative of, apprehending, apprehensive, apprised of, assiduous, attentive, au courant, awake, awake to, aware, aware of, behind the curtain, behind the scenes, canny, careful, cautious, circumspect, cognizant, cognizant of, complaisant, compliant, comprehending, concentrated, conforming, conscientious, conscious, conscious of, considerate, constant, conversant, curious, deliberate, delicate, devoted, devout, diligent, discreet, duteous, dutiful, earnest, evocative, faithful, finical, finicking, finicky, gingerly, guarded, haunted, heedful, helpful, hep to, hesitant, in retrospect, in the know, in the secret, indulgent, informed of, insightful, intelligent, intense, intent, intentive, judicious, knowing, knowledgeable, leaving out nothing, lenient, let into, loving, loyal, memoried, meticulous, mindful of, mindful of others, mnemonic, nagged, nice, niggling, no stranger to, noncommittal, obliging, observant, observing, obsessed, omniscient, on guard, on the ball, on the job, on the lookout, on to, open-eared, open-eyed, openmouthed, overlooking no possibility, pawky, perceptive, percipient, perspicacious, plagued, politic, practicing, prehensile, privy to, prudent, punctilious, punctual, rankled, redolent, regardful, remembering, remindful, reminiscent, retentive, retrospective, safe, sagacious, scrupulous, seized of, sensible, sensible of, sensible to, shrewd, slow to act, solicitous, streetwise, suggestive, tactful, tender, tentative, thorough, thoughtful, tolerant, true, unable to forget, unadventurous, uncommunicative, undaring, undeceived, understanding, unenterprising, unmindful, unprecipitate, vigilant, watchful, wise, wise to