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inform on

VERB

betray

Synonyms

STRONGEST

abandon deceive forsake mislead seduce

STRONG

bluff cross delude desert finger jilt knife trick

WEAK

be unfaithful bite the hand that feeds you blow the whistle break faith break promise break trust break with commit treason deliver up double-cross go back on inform against let down play Judas play false sell down the river sell out stab in the back take in turn in turn informer turn state's evidence walk out on

Antonyms

STRONG

aid assist help stay

WEAK

be faithful be loyal be quiet defend hide keep secret protect support

VERB

stab in the back

Synonyms

WEAK

abandon backstab be disloyal be unfaithful betray break promise commit treason cross deceive double-cross finger go back on play Judas sell down the river sell out trick turn in turn informer turn traitor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"These individuals risked their lives to infiltrate and inform on the activities of our nation's most radical and violent extremist groups," he said.

From BBC • Apr. 22, 2026

In that case, three Muslims alleged that FBI agents retaliated against them for refusing to inform on their religious communities.

From The Wall Street Journal • Nov. 9, 2025

"Overall, neuron counts do inform on intelligence, but are very limited in telling us what exactly animals are capable of," said George.

From Salon • May 4, 2024

It was claimed that these high neuron counts could directly inform on intelligence, metabolism and life history, and that T. rex was rather monkey-like in some of its habits.

From Science Daily • Apr. 29, 2024

Obviously, there’s one condition: he must be relied upon not to inform on people in hiding.

From "The Diary of a Young Girl" by Anne Frank

inform on

Example Sentences

Related Words