Attentive
Watchful
Synonyms: Alert, watchful, observant, percipient, aware, heeding, mindful, on guard, on one's toes, on the lookout, intent, engrossed, committed, diligent, rigorous, interested, beady-eyed, on the ball, awake, wide awake, perceptive, acute, noticing, heedful, vigilant, on one's guard, on the qui vive, concentrating, absorbed, focused, studious, scrupulous, earnest, all ears, not missing a trick, and regardful.
Thoughtful
Synonyms: Conscientious, thoughtful, kindly, tender, understanding, obliging, gallant, polite, courteous, civil, reverential, responsible, mannerly, considerate, kind, caring, solicitous, sympathetic, accommodating, chivalrous, well mannered, gracious, respectful, dutiful, decent, and regardful.
Example Sentences
She is always attentive during class discussions.
An attentive listener understands others' feelings better.
The waiter was attentive to our needs.
Being attentive helps you avoid making mistakes.
Stay attentive to learn important new skills.