(a.) Heedful; attentive; observant.

acclamatory accommodating accommodative active admiring advertent agog agreeable alert all ears all eyes appreciative approbatory assiduous attentive aware canny cap in hand careful cautious ceremonious circumspect commendatory complaisant compliant complimentary concentrated conforming conscientious conscious considerate constant courteous curious deferential deliberate delicate devoted devout diligent discreet duteous dutiful earnest encomiastic eulogistic faithful finical finicking finicky flattering gingerly guarded heedful helpful hesitant honorific indulgent intense intent intentive judicious laudatory leaving out nothing lenient loving loyal meticulous mindful mindful of others nice niggling noncommittal obliging observant observing on guard on the ball on the job open-eared open-eyed openmouthed overlooking no possibility panegyric pawky politic practicing prudent punctilious punctual respectful safe scrupulous slow to act solicitous tactful tender tentative thorough thoughtful tolerant TRUE unadventurous uncommunicative undaring unenterprising unprecipitate watchful