what is the squiggly line above spanish words called
Tilde The tilde (/ˈtɪldə/[1] or /ˈtɪldi/; ˜ or ~)[2] is a grapheme with several uses. The name of the character came into English from Spanish and from Portuguese, which in turn came from the Latin titulus, meaning "title" or "superscription".[1]
Spanish orthography Spanish uses only the acute accent, over any vowel: á é í ó ú. This accent is used to mark the tonic (stressed) syllable, though it may also be used occasionally in monosyllabic words to distinguish homophones such as si ('if') and sí ('yes'). The only other diacritics used are the tilde on the letter ⟨ñ⟩, which is considered a separate letter from ⟨n⟩, and the diaeresis used in some instances over ⟨u⟩ in words like bilingüe ('bilingual').