adjective
1.
Synonyms: attentive 1, advertent, arrect, intentive, observant, regardful
Antonyms: heedless, unheeding
2.
Synonyms: mindful 2, observant, observative, observing, regardful, thoughtful
Antonyms: heedless, unheeding
3.
Synonyms: careful 2, conscientious, conscionable, exact, fussy, meticulous, painstaking, punctilious, punctual, scrupulous