Alternative Spellings

asur, osur, oser, usser


  • forbidden

Example Sentences

  • "it would be assur to back out of Shmonah Esrei ... into the peripheral front of someone davening behind you." (

Languages of Origin

Textual Hebrew


Heb אסור asúr, Yiddish אָסור óser

Who Uses This

Orthodox: Jews who identify as Orthodox and observe halacha (Jewish law)


North America


The Joys of Hebrew, by Lewis Glinert (New York, 1992).
Frumspeak: The First Dictionary of Yeshivish, by Chaim Weiser (Northvale, 1995).
Dictionary of Jewish Usage: A Popular Guide to the Use of Jewish Terms, by Sol Steinmetz (Lanham, MD, 2005).


Ashkenazi Orthodox Jews tend to stress the first syllable: UH-sir. (Yiddish also has penultimate stress: O-ser.)

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