What Do You Call Someone Who Is Very Aware Of Their Surroundings?

What Do You Call Someone Who Is Very Aware Of Their Surroundings? acquainted, alive to, appreciative, apprised, attentive, au courant, clued-up (informal) cognizant, conscious, conversant, enlightened, familiar, hip (slang) informed, in the picture, keeping one’s finger on the pulse, knowing, knowledgeable, mindful, sensible, sentient, wise (slang) Antonyms. What is a word for someone who is