| behind the scenes(expression, idiom) |
| bored(refined, practical, cultured, urbane, erudite) |
| brainy(understanding, keen, alert, sensitive, perceptive) |
| briefed(knowledgeable, aware, informed, learned, well-informed) |
| certain(adjective, understanding, keen, sensible, alert) |
| citified(adjective, cool, refined, practical, mature) |
| cognisant |
| cognizant of |
| conscious of |
| conversant(adjective, understanding, keen, sensible, certain) |
| cosmopolitan(adjective, smooth, refined, practical, mature) |
| couth(adjective, cool, refined, practical, mature) |
| cultivated(refined, practical, cultured, urbane, erudite) |
| cultured(adjective, smooth, refined, practical, mature) |
| cynical(adjective, cool, refined, practical, mature) |
| discerning(adjective, understanding, keen, sharp, sensible) |
| discreet(understanding, keen, alert, sensitive, penetrating) |
| disenchanted(refined, practical, cultured, urbane, erudite) |
| disillusioned(adjective, cool, refined, practical, mature) |
| down pat(expression, silent, tacit, unspoken) |