| latched on(expression, adjective, familiar, wise, knowledgeable) |
| obsessed(adjective, keen, sympathetic, excited, desirous) |
| on the beam(expression, adjective, idiom, smart, sympathetic) |
| on the case(expression, adjective, idiom, keen, enthusiastic) |
| on to(expression, adjective, preposition, familiar, wise) |
| plugged in(expression, adjective, sympathetic, familiar, wise) |
| really into(expression, adjective, smart, desirous, skillful) |
| riveted(adjective, desirous, absorbed, occupied, engaged) |
| taken over(expression, adjective, desire, troubled, desirous) |
| taken up with(expression, adjective, idiom, desirous, occupied) |
| tuned in(expression, adjective, smart, familiar, wise) |
| under a spell(expression, adjective, idiom, enthusiastic, desirous) |
| up on(expression, adjective, familiar, wise, knowledgeable) |
| up to here in(expression, adjective, idiom, desirous, involved) |
| well-versed(adjective, smart, competent, skillful, able) |
| wise to(expression, adjective, familiar, wise, knowledgeable) |
| wised up(expression, adjective, smart, familiar, wise) |
| wound up with(expression, adjective, idiom, desire, troubled) |
| wrapped in(expression, adjective, desirous, worsted, exultant) |
| wrapped up in(expression, adjective, idiom, desire, troubled) |