eighth

American  

[eytth, eyth] / eɪtθ, eɪθ /

adjective

1. next after the seventh.

2. being one of eight equal parts.

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noun

1. an eighth part, especially of one (⅛).

2. the eighth member of a series.

3. Music. octave.

adverb

1. in the eighth place; eighthly.

eighth British  

/ eɪtθ /

adjective

1. (usually prenominal)

   1. coming after the seventh and before the ninth in numbering or counting order, position, time, etc; being the ordinal number of eight: often written 8th

   2. ( as noun )

      the eighth in line

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noun

1. 1. one of eight equal or nearly equal parts of an object, quantity, measurement, etc

   2. ( as modifier )

      an eighth part

2. the fraction equal to one divided by eight ( 1/ 8 )

3. another word for octave

adverb

1. Also: eighthly.  after the seventh person, position, event, etc

Etymology

Origin of eighth

before 1000; Middle English eightethe, Old English eahtotha; cognate with Old High German ahtoda, Old Norse āttandi, Gothic ahtud-. See eight, -th ²

Example Sentences

Not because the Dodgers reliever gave up three runs in the eighth inning to the Philadelphia Phillies, blowing a save opportunity and getting tagged with his first loss of the season.

From Los Angeles Times • Jun. 1, 2026

Catherine, who was running the 10k for the eighth time, said the charity was hugely important.

From BBC • May 31, 2026

Whittier Christian 5, Mater Dei 3: The Heralds scored two runs in the seventh to tie and two in the eighth, both on home runs to win the Division 2 final in Irvine.

From Los Angeles Times • May 30, 2026

Arteta won the 2020 FA Cup but finished eighth in a league affected by the Covid-19 pandemic, which meant games were played behind closed doors.

From BBC • May 28, 2026

Sookie manhandled his burger and ripped off about an eighth of a pound like a bear.

From "The Line Tender" by Kate Allen