EXAMPLES FROM THE WEB FOR SQUEALER
He was despised by the other convicts, for he was a "squealer."
I know a boy's code of honor, and how he regards a 'squealer.'
It hurt him, to think that he should be taken for a "squealer."
So he framed it up so that I appeared to be a squealer, and started the gangmen after me.
He never had been a “squealer,” and he was not going to begin now.
"Squealer and Squawker both went into the heap that time, I guess," said Rudolf.
I mean among those who honestly think Larry has turned stool and squealer.
What Ive told of my own affairs doesnt concern them, and I will claim that Ive never yet played the squealer on any other chap.
I know; but Stacey has my note for the rest of the money, and I dont propose to be a squealer, Gordon.
My accomplice, the heeler, was a sure thing grafter, who had selected me because I had the requisite nerve and was no squealer.
c.1300, probably of imitative origin, similar to Old Norse skvala "to cry out" (see squall (v.)). The sense of "inform on another" is first recorded 1865. The noun is attested from 1747.