screechy

As adjectives the difference between shrill and screechy

is that shrill is high-pitched and piercing while screechy is describing a sound as resembling a screech, or given to screeching.

As a verb shrill

is to make a shrill noise.

As a noun shrill

is a shrill sound.

As an adjective screechy

is describing a sound as resembling a screech, or given to screeching.

As a noun hoot is

a derisive cry or shout.

As a verb hoot is

to cry out or shout in contempt.

As a noun shriek

is a sharp, shrill outcry or scream; a shrill wild cry such as is caused by sudden or extreme terror, pain, or the like.

As a verb shriek

is to utter a loud, sharp, shrill sound or cry, as do some birds and beasts; to scream, as in a sudden fright, in horror or anguish.

As an adjective screechy is

describing a sound as resembling a screech, or given to screeching.