The spelling of the word "cadigan" can be a bit confusing due to its varied pronunciations. IPA phonetic transcription can help decipher the correct spelling. The pronunciation of "cadigan" is typically /kəˈdɪɡən/ with stress on the second syllable. The "c" is pronounced as "k," and the following "a" makes the schwa sound. The "d" is voiced, and the "g" is hard. The final "an" is pronounced like "ən." This should help you remember how to spell "cadigan" correctly.
The etymology of the word "cardigan" is rooted in its namesake, James Brudenell, the 7th Earl of Cardigan. The term emerged in the middle of the 19th century and was coined after the Earl's reputation for wearing a specific type of knitted waistcoat or jacket during the Crimean War (1853-1856). While the garment itself had been in existence for some time, the association of this particular style with Lord Cardigan led to its popularization and subsequent naming after him. Over time, the spelling evolved from "Cardigan" to "Cadigan" before ultimately settling as "Cardigan" in English.