What it means
A sacred cow is a rule, tradition, or idea everyone treats as untouchable, even when it’s clearly daft or outdated. Call something a sacred cow when people act like criticising it is basically a sin. You’ll hear it in offices, politics, and families, usually right before someone sighs and admits nobody’s brave enough to change it.
Usage examples
"The team hates the Monday all-hands, but the boss calls it a sacred cow, so we log in, yawn, and pretend it’s productive."
"The annual bonus is a sacred cow nobody on the board dares to touch."
"She was brave enough to question a few of the company's sacred cows."
"Cutting that pointless weekly report should be easy, but round here it's a sacred cow and everyone tiptoes round it."
"He called the dress code a sacred cow from another century, and honestly, he wasn't wrong."
Where it comes from
It started as a literal reference to cows treated as holy in Hindu tradition. By the late 1800s, English had turned it into a metaphor for anything people act like you mustn't criticise. Since then it's stuck around in politics, business, media, and family rows for ideas nobody dares poke.
Other ways to say it
This expression also appears in
