1CS a shrill sound is very high and unpleasant :
'That's not true,' she protested in a shrill voice.
a shrill whistle
Fran uttered a shrill scream.
'That's not true,' she protested in a shrill voice.
a shrill whistle
Fran uttered a shrill scream.2 shrill complaints, criticism, demands etc are too loud or strong and seem unreasonable :
He hated the shrill demands of the children.
He hated the shrill demands of the children. —shrillness noun [uncountable]
—shrilly
adverb
adverb