| listen in(verb, expression, phrasal verb, study, consider) |
| penetrate(verb, examine, test, investigate, survey) |
| pierce(verb, examine, test, investigate, survey) |
| prod(verb, examine, test, investigate, survey) |
| pry(verb, study, consider, examine, review) |
| put out a feeler(verb, expression, idiom, examine, test) |
| query(verb, examine, test, investigate, survey) |
| quiz(verb, examine, test, investigate, survey) |
| review(verb, study, check, consider, examine) |
| scout(verb, study, consider, examine, review) |
| sound(verb, examine, test, investigate, survey) |
| sound out(verb, expression, phrasal verb, examine, test) |
| spy(verb, study, consider, examine, review) |
| tap(verb, study, consider, examine, review) |
| test(verb, examine, idea, confirm, investigate) |
| test the waters(verb, expression, idiom, study, check) |
| verify(verb, examine, idea, confirm, test) |
| wiretap(verb, study, consider, examine, review) |