Spanish double letter
The ~ accent, called a tilde, on the Spanish letter Ñ indicates that the word used to be spelled with two Ns but now the tilde stands in for the second one. Ñ is pronounced like the ni in onion.
It’s very important to include the tilde when writing or typing, because N and Ñ are two different letters. There are words that mean different things depending on whether the word is spelled and pronounced with N or Ñ. Also, Ñ has its own section of the dictionary which comes after the entire N section.
Also see the letter n.
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