| grounded(adjective, knowledgeable, cultured, educated, erudite) |
| highbrow(adjective, knowledgeable, cultured, educated, erudite) |
| impartial(adjective, sound, reasonable, sensible, intellectual) |
| in the know(expression, adjective, idiom, sound, knowledgeable) |
| indulgent(adjective, calm, quiet, gentle, restrained) |
| insensible |
| intent(adjective, reasonable, keen, deep, rational) |
| irritable |
| judicious(adjective, sound, reasonable, sensible, moral) |
| keen(adjective, reasonable, deep, rational, sober) |
| knowing(adjective, sound, reasonable, sensible, intellectual) |
| lenient(adjective, calm, quiet, gentle, restrained) |
| lettered(adjective, knowledgeable, cultured, educated, erudite) |
| levelheaded(adjective, sound, reasonable, keen, sensible) |
| literary(adjective, sound, knowledgeable, cultured, educated) |
| literate(adjective, knowledgeable, cultured, educated, erudite) |
| long-suffering(adjective, calm, quiet, cool, gentle) |
| lost in thought(expression, adjective, idiom, reasonable, sober) |
| lucid(adjective, sound, reasonable, sensible, intellectual) |
| master(adjective, sagacious) |