Answer:

PROBED

Answer	Crossword Clue
PROBED	Delved into
PROBED	Looked into deeply
PROBED	Examined thoroughly

PROBED	Looked into
PROBED	Dug into
PROBED	Kefauver did.
PROBED	Investigated thoroughly.
PROBED	Investigated.
PROBED	Examined
PROBED	Scrutinized
PROBED	Investigated

PROBED	Examined deeply

Crossword

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