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For the sake of all fucks, everywhere.
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The correct spelling and grammar of the expression is:
"for fuck's sake"
Here's the breakdown:
Spelling:
- "fuck's" — This is the possessive form of "fuck", meaning "for the sake of fuck".
- "sake" — A noun meaning benefit, purpose, or reason.
Grammar considerations:
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Possessive apostrophe:
Just like "for heaven's sake" or "for God's sake", the apostrophe in "fuck's" is grammatically correct because it shows possession: the "sake" is "of fuck". -
Colloquial and vulgar:
This phrase is very informal and strongly profane, so it’s best used with awareness of your audience and context. -
Singular vs. plural confusion:
Some mistakenly write "for fucks sake" (without the apostrophe), which is incorrect. That would imply multiple "fucks" but still lacks proper possessive structure. The correct form is "fuck's" with an apostrophe-s.
Examples:
- "For fuck's sake, turn that music down!"
- "Oh, for fuck's sake—again?!"
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No, "for fucks' sake" is not grammatically correct in standard English.
Here's why:
"fucks' sake" implies a plural possessive:
- "Fucks" = plural of "fuck" (as in multiple "fucks")
- "Fucks’" = possessive of that plural (something belonging to multiple "fucks")
- So "for fucks' sake" would mean "for the sake of multiple fucks" — which is not the idiomatic expression in use and doesn’t make grammatical or idiomatic sense in context.
The correct form is "for fuck's sake":
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This is a singular possessive: "for the sake of fuck".
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It mirrors other standard expressions like:
- "for God's sake"
- "for heaven's sake"
- "for Pete's sake"
Summary:
Form Grammatical? Meaning for fuck's sake Yes
Standard idiom; expresses frustration for fucks' sake No
Incorrect plural possessive for fucks sake No
Missing apostrophe; not standard