| dig out(verb, expression, disturb, weaken, search) |
| gouge out(verb, expression, phrasal verb, action, weaken) |
| harrow(verb, agriculture) |
| inquire(verb, action, study, consider, follow) |
| prospect(verb, action, study, consider, examine) |
| ransack(verb, action, follow, examine, pursue) |
| tunnel(verb, weaken, dig, undermine, mine) |
| turn over(verb, expression, phrasal verb) |
| consider(verb, study, examine, review, case) |
| cultivate(verb, agriculture) |
| dig up(verb, expression, phrasal verb, determine, reveal) |
| hollow(adjective, concavity) |
| hunt(noun, verb, follow, pursue, look) |
| plumb(verb, probe) |
| question(noun, verb, study, consider, examine) |
| sap(verb, weaken, extract, undermine, drill) |
| scoop out(verb, expression, phrasal verb, action, weaken) |
| sift(verb, action, study, consider, examine) |
| work(verb, touch, physical, extract, drill) |
| backset |