This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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verb-intransitive. To search deeply and laboriously: delved into the court records.

verb-intransitive. To dig the ground, as with a spade.

v. Archaic To dig (ground) with a spade.

v. To dig the ground, especially with a shovel.

v. To search thoroughly and carefully for information, research, dig into, penetrate, fathom, trace out

v. To dig, to excavate.

n. A pit or den.

v. To dig; to open (the ground) as with a spade.

v. To dig into; to penetrate; to trace out; to fathom.

verb-intransitive. To dig or labor with a spade, or as with a spade; to labor as a drudge.

n. A place dug; a pit; a ditch; a den; a cave.

To dig; turn up or excavate with a spade or some other tool.

To bury.

To practise digging; labor with the spade.

Figuratively, to carry on laborious or continued research or investigation, as one digging for hidden treasure.

n. A place dug or hollowed out; a pitfall; a ditch; a den; a cave.

n. That which is dug out: as, a delve of coals (a certain quantity of coal dug from a mine).

v. turn up, loosen, or remove earth

"He and Michelle can go back to their hateful church and once again delve into their bitter circle of friends that hate America."

delved    delves    delving   

remove    take    withdraw    take away   

furrow    burrow    trowel    root    shovel    rut    groove    spade    rout    tunnel   

delver   

penetrate    fathom    pit    ditch    den    cave    dig    investigate   

shelve    twelve   

instancy    excitement    supervene    tremour    questing    unwholesomeness    parlourmaid    receptiveness    reaction