| sift(verb, study, consider, examine, review) |
| spy(verb, study, consider, examine, review) |
| stake out(verb, expression, phrasal verb, study, consider) |
| accompany(verb, follow, harass, trace, track) |
| attend(verb, follow, harass, trace, seek) |
| badger(verb, follow, harass, trace, track) |
| bait(verb, follow, harass, trace, track) |
| be all ears(verb, study, consider, examine, review) |
| be curious |
| be nosy |
| be on the lookout(verb, examine, look, seek, search) |
| bird-dog(verb, follow, harass, trace, track) |
| burn with curiosity(expression, idiom) |
| burrow |
| camp on the doorstep of(verb, expression, idiom, phrasal verb, follow) |
| case(verb, study, consider, examine, review) |
| cast about(verb, expression, phrasal verb, examine, look) |
| chase(verb, follow, trace, seek, track) |
| check out(expression, study, consider, examine, review) |
| chivy(verb, follow, harass, trace, track) |