Synonyms for attentive

alert, awake, aware, careful, caring, cognizant, conscientious, conscious, considerate, diligent, eagle-eyed, focused, heedful, industrious, interested, meticulous, mindful, observant, painstaking, punctilious, regardful, scrupulous, sedulous, sharp-eyed, solicitous, studious, thoughtful, undistracted, vigilant, wary, watchful