noun
moser
MOH-suhr
noun
1
An informer; someone who reports on or betrays another person to the authorities.
"The other inmates shunned him, convinced he was a moser."
"Nobody trusted the new guy, word was he had been a moser back home."
verb
1
To inform on or betray someone, typically to the police or another authority.
"He was afraid his old friend might moser on him."
"She refused to moser, even under pressure."
How to Use Moser
Learner’s notesIn plain EnglishSomeone who snitches or informs on others, or the act of doing so.
When to use it
A niche slang term, most familiar in Yiddish-influenced or crime-related speech rather than everyday usage.
Word Forms
mosered past tense, mosers plural, moserim plural, mosrim plural, Mosers plural, mosers singular
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Etymology
Borrowed from Hebrew moser, "informer," via Yiddish — used in English mainly within Jewish communities and, more broadly, in crime slang.