Türk Dil Kurumu (TDK) kılavuzuna göre, "bir daha" kelimesinin doğru yazılışı ayrı olarak, yani "bir daha" şeklindedir 123. "Birdaha" veya "bidaha" gibi birleşik yazımlar yanlıştır 12.
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yazılışı **ayrı** olarak, yani \"bir daha\" şeklindedir [```1```](https://www.milliyet.com.tr/gundem/bir-daha-nasil-yazilir-birdaha-tdk-yazimi-ayri-mi-bitisik-mi-bir-daha-kelimesinin-dogru-yazilisi-6199566)[```2```](https://www.mynet.com/bir-daha-nasil-yazilir-bir-daha-ayri-mi-yazilir-birlesik-mi-yazilir-tdk-ye-gore-dogru-yazilisi-nedir-170100288563)[```3```](https://www.ankaramasasi.com.tr/haber/2145113/bir-daha-mi-birdaha-mi-dogru-yazimi-nasil-olmali-tdkya-gore-nasil-yazilmali). \"Birdaha\" veya \"bidaha\" gibi birleşik yazımlar yanlıştır [```1```](https://www.milliyet.com.tr/gundem/bir-daha-nasil-yazilir-birdaha-tdk-yazimi-ayri-mi-bitisik-mi-bir-daha-kelimesinin-dogru-yazilisi-6199566)[```2```](https://www.mynet.com/bir-daha-nasil-yazilir-bir-daha-ayri-mi-yazilir-birlesik-mi-yazilir-tdk-ye-gore-dogru-yazilisi-nedir-170100288563).","sources":[{"sourceId":1,"url":"https://tdksozluk.net/bir-daha-nasil-yazilir.html","title":"Bir Daha Nasıl Yazılır? – TDK Sözlük Nasıl Yazılık 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