Answer:

SHRILL

Answer	Crossword Clue
SHRILL	Like a katydid's song
SHRILL	Like a cicada's song
SHRILL	Irritatingly high-pitched

SHRILL	Like many whistles
SHRILL	High in an annoying way
SHRILL	Like a rebel yell
SHRILL	Like an ear-piercing sound
SHRILL	High-pitched
SHRILL	Piercing
SHRILL	Screechy
SHRILL	Like some bird calls

SHRILL	Unpleasantly penetrating
SHRILL	Annoyingly high-pitched
SHRILL	High-pitched.
SHRILL	Strident.
SHRILL	Keen.
SHRILL	Piercing.
SHRILL	Penetrating.
SHRILL	Like a calliope

SHRILL	Strident
SHRILL	Like the sound of a teakettle
SHRILL	Like the sound of a siren
SHRILL	Like high-pitched tones
SHRILL	Piercing, as a sound
SHRILL	Piercing in tone
SHRILL	High-pitched and piercing

Crossword

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