kosher

In Jewish law, food must be ritually cleaned and prepared in order to be kosher, or fit to eat. Today, it can also mean anything that is proper or legitimate. Is it kosher to date your best friend's ex? Depends on who you ask.

The word kosher, literally meaning “clean” or “pure,” refers to food that has been ritually prepared or blessed so it can be eaten by religious Jews. It comes from the Hebrew word kasher, meaning "proper" or "lawful," and became common in English in the mid-19th Century. It can be used as an adjective, for example, "kosher meat." In the mid-1920's, the word took on a more general meaning, used to refer to anything that was acceptable.

Definitions of kosher
  1. adjective
    conforming to dietary laws
    kosher meat”
    “a kosher kitchen”
    synonyms: cosher
    clean
    ritually clean or pure
  2. adjective
    proper or legitimate
    Synonyms:
    proper
    marked by suitability or rightness or appropriateness
  3. noun
    food that fulfills the requirements of Jewish dietary law
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    type of:
    aliment, alimentation, nourishment, nutriment, nutrition, sustenance, victuals
    a source of materials to nourish the body
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