seventy

1 of 3

noun (1)

sev·​en·​ty ˈse-vən-tē 

ˈse-bᵊm-, 

-dē

plural seventies

1

: a number equal to seven times 10 see Table of Numbers

2

seventies plural : the numbers 70 to 79

specifically : the years 70 to 79 in a lifetime or century

3

Seventy : a Latter-day Saint elder ordained for missionary work under the apostles

seventieth

ˈse-vən-tē-əth 

ˈse-bᵊm-, 

-dē-

adjective or noun

seventy adjective

seventy pronoun, plural in construction

seventieth

2 of 3

adjective

sev·​en·​ti·​eth ˈsevən|tēə̇th 

-vᵊm|, 

ˈsebᵊm|, 

|dē-

1

: being number 70 in a countable series

the seventieth day

see Table of Numbers

2

: being one of 70 equal parts into which something is divisible

a seventieth share of the money

seventieth

3 of 3

noun (2)

"

plural -s

1

: number 70 in a countable series

2

: the quotient of a unit divided by 70 : one of 70 equal parts of something

one seventieth of the total

Examples of seventy in a Sentence

Noun (1)

She is in her seventies.

Recent Examples on the Web

Noun

Yuji Akagawa, a grandfather in his seventies, was the proprietor and key administrator. —Literary Hub, 17 June 2026

The ads may seem tame by today's standards, but their overt sexuality was shocking in the late seventies. —Serena Turner, Vanity Fair, 15 June 2026

In the eighteen-seventies, as now, most people who bought stocks and bonds were well off. —John Cassidy, New Yorker, 15 June 2026

Willie Nelson preaching the health benefits of cannabis in the seventies as Nixon declared the War on Drugs. —Philip Wolf, Rolling Stone, 9 June 2026

Word History

Etymology

Noun (1)

seventy, adjective, from Middle English, from Old English seofontig, short for hundseofontig, from hundseofontig, noun, group of seventy, from hund hundred + seofon seven + -tig group of ten; akin to Old English tīen ten

Adjective

Middle English seventithe, from Old English hundseofontigotha, from hundseofontig seventy + -otha, -tha -th

First Known Use

Noun (1)

12th century, in the meaning defined at sense 1

Phrases Containing seventy

• seventy-eight

Kids Definition

seventy

noun

sev·​en·​ty ˈsev-ən-tē 

plural seventies

: a number equal to seven times 10 see number

seventieth

-tē-əth 

adjective or noun

seventy adjective or pronoun