observant
ob·ser·vant
adjective
2.
quick to notice; showing quick and keen perception
Origin
Borrowed from French observant.
Related words
Word family
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.