Fifth
/fɪfθ/noun
The ordinal form of five; the item or position numbered 5.
Did you know?English *fifth* preserves an ancient sound change from *five* that also shows up in Germanic languages, where the old /v/ sound shifted into the thorny /f/ cluster.
Etymological Timeline
Proto-Indo-European
PIE
*penkwe
“the number five”
Proto-Germanic
PGmc
*fimf
“five”
Old English
OE
fifta
“fifth, the fifth in order”
Middle English
ME
fifthe
“fifth”
Modern English
English
fifth
“the ordinal number after fourth”