| in touch(expression, informed) |
| informed in |
| initiate |
| initiated |
| insightful(adjective, understanding, cool, crack, significant) |
| intellectual(knowledgeable, cultured, educated, erudite, enlightened) |
| intended(adjective, cool, crack, significant, intelligent) |
| intentional(adjective, cool, crack, significant, intelligent) |
| intimate with |
| introduced(adjective, familiar, knowledgeable, aware, savvy) |
| keen(adjective, understanding, sensible, certain, alert) |
| kept posted(expression, adjective, sympathetic, familiar, knowledgeable) |
| know all the answers(expression, idiom, careful, aware, attentive) |
| know ins and outs(expression, idiom, careful, aware, attentive) |
| knowledge |
| known(adjective, understanding, keen, sensible, certain) |
| lettered(familiar, knowledgeable, informed, cultured, educated) |
| literary(knowledgeable, cultured, educated, erudite, enlightened) |
| literate(knowledgeable, cultured, educated, erudite, enlightened) |
| noticing(adjective, understanding, keen, sensible, certain) |