n.
Pronunciation: ' fo ̇ r-t ē
Function: noun
Inflected Form: plural forties
Etymology: Middle English fourty, adjective, from Old English f ē owertig, from f ē owertig group of 40, from f ē ower four + -tig group of 10; akin to Old English t ī en ten
Date: before 12th century
1 ― see NUMBER table
2 plural : the numbers 40 to 49 specifically : the years 40 to 49 in a lifetime or century
3 : the third point scored by a side in a game of tennis
– for · ti · eth \ ' fo ̇ r-t ē - ə th \ adjective or noun
– forty adjective
– forty pronoun, plural in construction
– for · ty · ish \ -t ē -ish \ adjective