| informer(noun, sneak, reporter, canary, informant) |
| adviser(source, sneak, herald, informant, squealer) |
| announcer(source, sneak, herald, rat, informant) |
| informant(sneak, squealer) |
| reporter(source, sneak, informant, squealer) |
| source(sneak, rat, informant, squealer) |
| tipster(sneak, canary, informant, squealer, palaver) |
| accuser(source, sneak, herald, rat, informant) |
| advisor |
| authority |
| betrayer(source, sneak, rat, informant, squealer) |
| blab(sneak, herald, canary, informant, palaver) |
| blabbermouth(source, sneak, rat, informant, squealer) |
| canary(source, sneak, rat, informant, squealer) |
| channel |
| communicant |
| crier(source, sneak, herald, rat, canary) |
| declarer |
| deep throat(expression, source, sneak, rat, canary) |
| double-crosser(source, sneak, rat, informant, squealer) |