Synonyms to listening in

attention, NB, TLC, absorption, acclaim, act of courtesy, acuity, acuteness, agility, alertness, amenity, anticipation, application, assiduity, attentions, attentiveness, audibility, audience, audition, aural examination, aural sense, auscultation, awareness, benignity, brightness, bugging, care, carefulness, caution, circumspection, circumspectness, civility, cognizance, concentration, concern, conference, consciousness, considerateness, consideration, courtesy, debate, deference, deliberation, devoirs, diligence, distinction, duties, eager attention, ear, eavesdropping, egards, electronic surveillance, engrossment, examination by ear, favor, favorable attention, forethought, gallantry, graceful gesture, hearing, heed, heedfulness, heeding, homage, honor, hushed attention, immersion, industry, intentness, interview, keenness, kindliness, limelight, listening, loving care, mark, mind, mindfulness, nimbleness, note, notice, notoriety, observance, observation, polite act, preparedness, prominence, promptitude, promptness, publicity, punctuality, quickness, rapt attention, readiness, regard,