Answer: redig

AnswerCrossword Clue
REDIG

Delve again

REDIG

Do one's archaeological work again

REDIG

Unearth again

REDIG
Make new holes
REDIG
Be overly optimistic with one's archeological work
REDIGFix, as a trench
REDIGMake even deeper
REDIGMake a new excavation
REDIGDo further archeological work
REDIGUse the spade again
REDIGExcavate anew
REDIGSpade again.
REDIGExcavate further.
REDIGDo more spadework.
REDIGSpade up again.
REDIGExcavate again.
REDIGMake a new hole
REDIGFix a foxhole
REDIGExcavate again