It's often tested by shouting "Hello!" Crossword Clue
4 letters · New York Times · Tuesday, July 18, 2006 · 18-Down
Appeared in 1 New York Times Crossword: Tuesday, July 18, 2006.
Exact puzzle match · New York Times · July 18, 2006 · 18-Down · 4 letters
ECHO0 of 4 letters revealed
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