- past participle of forbid.
forbidden
Americanverb
adjective
-
not allowed; prohibited.
a forbidden food in his religion.
-
Physics. involving a change in quantum numbers that is not permitted by the selection rules.
forbidden transition.
adjective
-
not permitted by order or law
-
physics involving a change in quantum numbers that is not permitted by certain rules derived from quantum mechanics, esp rules for changes in the electrical dipole moment of the system
Usage
It was formerly considered incorrect to talk of forbidding someone from doing something, but in modern usage either from or to can be used: he was forbidden from entering/to enter the building
Other Word Forms
Etymology
Origin of forbidden
First recorded in 1200–50, for the adjective
Explanation
When something is forbidden, it's not allowed. You were forbidden to use your father's computer but you did it anyway — and that's why you're grounded. You may recognize the phrase "forbidden fruit," which refers to a famous Bible story about Adam and Eve in the Garden of Eden. They ate an apple that God had forbidden them to eat, and there were terrible consequences. "Forbidden fruit" refers to something you want even more than you might otherwise, because you're not allowed to have it. If you know a little German, you may notice that forbidden sounds like its German equivalent, verboten.
Vocabulary lists containing forbidden
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Code Talker
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The Empire State Building has an observation deck open to the public that offers stunning views of New York, but access to higher points is forbidden.
From Barron's • Jul. 1, 2026
Students really enjoy Arthur Miller’s “The Crucible” — it’s all about the human condition and cancel culture, forbidden love and lies and deceit, with witches in the forest.
From Los Angeles Times • Jul. 1, 2026
But that is not, in fact, how Harlan meant it: In context, his broader argument was that permitting Jim Crow segregation would authorize a racial “caste” forbidden by the 14th Amendment.
From Slate • Jun. 22, 2026
"I love the forbidden love element and the casting is brilliant."
From BBC • Jun. 17, 2026
Mountain Dew was forbidden, and our speech was monitored for the slightest hint of a Raleigh accent.
From "Me Talk Pretty One Day" by David Sedaris
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
