Where does “eighth final” come from?

eighth final (English) comes from English final, from Middle English final, from Old French final, from Latin fīnālis, from Latin -ālis, from Proto-Italic -ālis — forms relational adjectives.

eighth final (English): One of the eight competitions in a knockout tournament whose winners go on to play in the four quarterfinals

Definitions

  1. One of the eight competitions in a knockout tournament whose winners go on to play in the four quarterfinals

Ancestry of “eighth final”, step by step

eighth final traces back through two separate lines of ancestry.

via English final

StepLanguageWordMeaning
1EnglishfinalA final examination; a test or examination given...
2Middle Englishfinal—
3Old Frenchfinalfinal, definitive, last
4LatinfīnālisOf or pertaining to boundaries
5Latin-ālis—
6Proto-Italic-ālisforms relational adjectives

via English eighth

StepLanguageWordMeaning
1EnglisheighthThe ordinal form of the number eight; The person...
2Middle Englisheightetheeighth
3Old Englisheahtoþaeighth
4Proto-Germanicahtudôeighth
Every word from Proto-Italic -ālis →Every word from Latin -ālis →Every word from Latin fīnālis →