inform on (?.)
- accuse
- allege
- arraign
- article
- babble
- be indiscreet
- be unguarded
- bear witness against
- betray
- betray a confidence
- blab
- blabber
- blow the whistle
- blurt
- blurt out
- book
- bring accusation
- bring charges
- bring to book
- charge
- cite
- complain
- denounce
- denunciate
- double-cross
- fasten on
- fasten upon
- finger
- fink
- give away
- hang something on
- impeach
- imply
- impute
- indict
- inform
- inform against
- insinuate
- lay charges
- leak
- let down
- let drop
- let fall
- let slip
- lodge a complaint
- lodge a plaint
- narc
- peach
- pin on
- prefer charges
- press charges
- put on report
- rat
- report
- reproach
- reveal a secret
- sell out
- sing
- snitch
- snitch on
- spill
- spill the beans
- squeal
- stool
- take to task
- talk
- task
- tattle
- tattle on
- taunt with
- tax
- tell on
- tell secrets
- tell tales
- testify against
- turn in
- turn informer
- twit
- two-time