1. (a.) Heedful; intent; observant; regarding with care or attention.

2. (a.) Heedful of the comfort of others; courteous.

accommodating accommodative accurate advertent affable agile agog agreeable alert alive all ears all eyes assiduous attenuate awake aware bright cap in hand careful cautious ceremonious circumspect civil close complaisant concentrated concentrating conscientious conscious considerate correct courteous courtly critical curious deferential delicate demanding detailed diligent dutiful eager earnest exact exacting exigent exquisite fair fine finical finicking finicky fussy gallant graceful gracious heedful helpful honorific indulgent intense intent intentive interested keen lenient listening loving meticulous mindful mindful of others minute narrow nice niggling nimble obliging observant observing on the on the alert on the ball on the job open-eared open-eyed openmouthed particular polite precise precisianistic precisionistic prompt punctilious punctual qui vive quick ready reedy refined regardful religious respectful rigid rigorous scrupulous scrutinizing sharp sleepless slender slight slim smart solicitous strict subtle tactful tender tenuous thoughtful tolerant twiggy unblinking unnodding unsleeping unwinking urbane wakeful watchful wide-awake