One of these languages is controversially thought to be the reason a nearby tongue saw initial /f/ become initial /h/; that ergative-absolutive language contains the word ezker, which is known to be the source of a Spanish root for "left.
A statement made by Gustaf Ramstedt, among others, says that the most prevalent of these should actually not be classified as one of them. That statement is the Altaic hypothesis, which concerns a language which includes seven "speech levels" and is written in Hangul. One of these languages is controversially thought to be the reason a nearby tongue saw initial /f/ become initial /h/; that ergative-absolutive language contains the word ezker, which is known to be the source of a Spanish root for "left." For 10 points, give this term, applying to Basque and Korean, which refers to languages that do not have any clear genetic relationship to others.
A statement made by Gustaf Ramstedt, among others, says that the most prevalent of these should actually not be classified as one of them.
language {isolates} [accept {isolates} after "{language}"]