Answer:

DUG

Answer	Crossword Clue
DUG	Liked, in the 60's
DUG	Used a shovel
DUG	Grooved on

DUG	Made a hole
DUG	Excavated
DUG	Appreciated
DUG	Made like a marmot
DUG	Did archaeological work
DUG	Deemed groovy
DUG	Did some gardening
DUG	Like, liked

DUG	Used a spade
DUG	Deemed way cool
DUG	Really got into
DUG	Used a trowel
DUG	Was into
DUG	Really enjoyed, slangily
DUG	Understood, slangily
DUG	Emulated a gopher

DUG	Went for
DUG	Really liked, slangily
DUG	Went after treasure
DUG	Found, with "up"
DUG	Had fun with
DUG	Went underground?
DUG	Burrowed
DUG	Liked, hippie-style

DUG	Really liked
DUG	Found really groovy
DUG	Liked
DUG	Liked, like a beatnik
DUG	Researched in depth?
DUG	Researched in depth
DUG	Trenched
DUG	Excavated.

DUG	Spaded.
DUG	Burrowed.
DUG	Delved.
DUG	Worked in the garden.
DUG	Understood: Colloq.

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.