1
astute(adjective, smooth, keen, sharp, smart)
1
at home with(expression, adjective, idiom, familiar, knowledgeable)
1
awake to
1
battle-scarred
1
be up on(adjective, careful, knowledgeable, cautious, aware)
1
been there(expression, adjective, familiar, sophisticated, knowledgeable)
1
behind the curtain(expression, idiom)
1
behind the scenes(expression, idiom)
1
bookish(adjective, sound, knowledgeable, cultured, learned)
1
bored(adjective, refined, practical, cultured, urbane)
1
brainy(adjective, smooth, keen, sharp, smart)
1
briefed(adjective, knowledgeable, aware, informed, learned)
1
broken in(expression, adjective, familiar, sophisticated, knowledgeable)
1
cagey(adjective, smooth, keen, sharp, smart)
1
calculating(adjective, smooth, keen, sharp, smart)
1
canny(adjective, smooth, keen, sharp, smart)
1
capable(adjective, familiar, sophisticated, knowledgeable, skilled)
1
careful(adjective, cautious, aware, attentive, wary)
1
cautious(adjective, careful, knowledgeable, aware, attentive)
1
chary(adjective, careful, knowledgeable, cautious, aware)
11 years ago|8.6k views|share |citing 
APASmart Define. (2015). in the know thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/in_the_know/thesaurus/synonyms
ChicagoSmart Define. 2015. "in the know thesaurus" https://smartdefine.org/in_the_know/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, in the know thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/in_the_know/thesaurus/synonyms>.
MLASmart Define. "in the know thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/in_the_know/thesaurus/synonyms>