attentive
adjective
[ əˈtɛntɪv ]
• paying close attention to something.
• "never before had she had such an attentive audience"
Similar:
alert,
awake,
watchful,
wide awake,
observant,
perceptive,
percipient,
acute,
aware,
noticing,
heeding,
heedful,
mindful,
vigilant,
on guard,
on one's guard,
on one's toes,
on the qui vive,
on the lookout,
concentrating,
intent,
absorbed,
engrossed,
focused,
committed,
studious,
diligent,
scrupulous,
rigorous,
earnest,
interested,
all ears,
beady-eyed,
not missing a trick,
on the ball,
regardful,
Origin:
late Middle English: from Old French attentif, -ive, from atendre ‘give one's attention to’ (see attend).