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/ˈbɹeɪnt͡ʃaɪld/ · noun
(informal) A creation of one's brain; an original idea or innovation of a person or group of people, an organization, etc..
The entire project was the brainchild of a small group of visionaries.
A brayne-child o' mine ovvne! and I am proud on't!
I am glad you find so many lovers of your brain children in the West, although I knew it would be so.
Then, gradually, the almost maternal yearning to see his brain-child [a play] once more, which can never be wholly crushed out of a young dramatist, returned to him—faintly at first, then getting stronger by degrees till it could no longer be resisted. True, he knew that when he beheld it, the offspring of his brain would have been mangled almost out of recognition, but that did not deter him.
Inspiration's old lady gave birth to a new brainchild one afternoon at a Rhythm Kings rehearsal, when I took a few choruses on Jack Pettis' C-melody sax while he was out humoring his bladder.
We had these people for years and years, such as Mr. [Robert] McNamara and all of his brainchilds, come up here, and he said everything is going to work out fine and everybody followed him. Look what a mess we got into in Southeast Asia.
Not only all your children and your children’s children, but all your brainchildren and your brainchildren’s brainchildren must grow from the common stock of Design elements, genes and memes, that have so far been accumulated and conserved by the inexorable lifting algorithms, the ramps and cranes and cranes-atop-cranes of natural selection and its products.
Recent health 'movements' such as the Child Survival Development Revolution and Universal Childhood Immunization, are all brainchilds of international or (Western) national aid institutions.
Use brain child when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Brain child means (informal) A creation of one's brain; an original idea or innovation of a person or group of people, an organization, etc..
Common synonyms include inspiration.
The opposite depends on the specific sense.
The entire project was the brainchild of a small group of visionaries.
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