Synonyms of drop a dime

verbTo inform, to call the authorities (on).

• dimeTo inform on, to turn in to the authorities, to rat on, especially anonymously.
• snitchTo inform on someone, especially in betrayal of others.
• rat outTo inform authorities (about someone); to tell on (somebody).
• grass upTo betray by informing on.
• bewrayTo expose or rat out (someone).
• blow the whistle
• clepe dialectal
• denounce
• dime out USTo report to the authorities; to snitch on or betray to an enemy.
• dob
• drop a dime on someone USTo inform on (a person); to turn someone in.
• fingerTo report to or identify for the authorities; to inform on.
• fink USTo betray a trust; to inform on.
• fizgig Australia
• inform
• inform onTo tell on someone; to act as an informant against.
• grass on UKTo betray by informing on.
• lolly upTo inform on.
• name namesTo identify specific people, especially people involved in misdeeds or other secretive activity.
• narkTo serve or behave as a spy or informer; to tattle.
• peachTo inform on someone; turn informer.
• rat onTo tattle, squeal about (someone).
• roll on
• sing
• snitch upTo come forward and snitch on someone.
• squeakTo inform, to squeal.
• squeal
• tattle
• tell
• tell all
• tell on
• tell tales
• tip off
• turn inTo relinquish; give up; to tell on someone to the authorities (especially to turn someone in).
• give up
• give away
• spill the beansTo reveal a secret; to disclose information.
• let the cat out of the bagTo disclose a secret; to let a secret be known, often inadvertently.