n. Function: adjective
1
Synonyms: WATCHFUL , open-eyed, unsleeping, vigilant, wakeful, wide-awake
Related Words: attentive, heedful, mindful; careful
Idioms: all eyes and ears, on (one's) guard, on the alert
Contrasted Words: inattentive, unmindful; aloof, detached, indifferent, unconcerned
2
Synonyms: INTELLIGENT 2, brainy, bright, brilliant, clever, knowing, quick-witted, ready-witted, sharp, smart
Related Words: apt, prompt, quick, ready
Contrasted Words: lackadaisical, languid, listless
3
Synonyms: LIVELY 1, animated, ||cant, ||canty, gay, keen, spirited, sprightly, unpedantic, vivacious
Related Words: frisky; mercurial
Idioms: full of life
Contrasted Words: inactive, indolent
Antonyms: inert