delve (v.)
- bore
- burrow
- cultivate
- culture
- cut
- dig
- dike
- dredge
- dress
- drill
- drive
- excavate
- explore
- fertilize
- forage
- force
- frisk
- furrow
- gouge
- groove
- grub
- harrow
- hoe
- hollow
- hunt
- list
- lower
- mine
- mulch
- plow
- poke
- prune
- pry
- quarry
- rake
- research
- root
- sap
- scoop
- scrabble
- scrape
- scratch
- search
- shovel
- sink
- spade
- thin
- till
- trench
- tunnel
- vacuum
- void
- weed
- work
