adj · noun · 11 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/mɪˈlɛn.ɪ.əl/
Southern-England:Recorded audio is listed in the source snapshot.
Canada, General-American:/məˈlɛn.i.əl/
rhymes with -ɛniəl
CMU ARPABET:M IH0 L EH1 N IY0 AH0 L
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Thousand-year-old; also (by extension, loosely) thousands of years old.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: millenarian
Antonyms: none provided
2
adj
Meaning 2
Occurring every thousand years.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adj
Meaning 3
Occurring at, or relating to, the beginning or end of a millennium.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
adj
Meaning 4
Referring to the thousandth anniversary of an event or happening.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Examples
a millennial fair
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
adj
Meaning 5
Often capitalized: of or relating to, or characteristic of, people born in the last two decades of the 20th century from around the early 1980s to the mid 1990s (with 1996 births cited as the last Millennial year), and who reached adulthood early in the third millennium C.E.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of, broadly, capitalized, not-comparable, often
Topics: demographics, demography
Examples
the millennial generation
He was suffering from a typical millennial problem: Which is the correct emoji to use?
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
adj
Meaning 6
Synonym of millenarian (“pertaining to the belief in an impending period of one thousand years of peace and righteousness associated with the Second Coming of Christ and his reign on earth”).
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Topics: Christianity
Examples
the millennial judgment
Meaning relationships
Synonyms: millenniary, millenarian
Antonyms: none provided
7
adj
Meaning 7
Alternative letter-case form of millennial.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of, not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
8
noun
Meaning 8
Often capitalized: a person from the generation born in the last two decades of the 20th century, from around the early 1980s to the mid-1990s and who reached adulthood early in the third millennium C.E., characterized by their familiarity with computer technology and poorer financial prospects than their parents.
Definition source: English Wiktionary via Wiktextract
Topics: demographics, demography
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: echo boomer, Generation Yer
Antonyms: none provided
9
noun
Meaning 9
A thousandth anniversary; also, a celebration of such an anniversary.
Definition source: English Wiktionary via Wiktextract
Usage: obsolete, rare
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: anniversary
10
noun
Meaning 10
Alternative letter-case form of millennial.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
11
adjective
Meaning 11
relating to a millennium or span of a thousand years
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: millennian
Antonyms: none provided
History
Etymology
The adjective is a learned borrowing from Late Latin mīllennium (“millennium”) + English -al (suffix meaning ‘of or pertaining to’ forming adjectives; and forming nouns). The English word may be analysed as millennium + -al or milli- (prefix meaning ‘thousand’) + -ennial (suffix meaning ‘years’). Adjective sense 5 (“of or relating to, or characteristic of, people born in the last two decades of the 20th century”) was coined by the American authors William Strauss (1947–2007) and Neil Howe (born 1951) in their book Generations (1991): see the quotations. The noun is derived from the adjective.
Across languages
Translations
58 source translations are retained for this English entry.
Czech:
tisíciletý
— thousand-year-old; thousands of years old
Finnish:
tuhatvuotinen
— thousand-year-old; thousands of years old
Finnish:
tuhatvuotis-
— thousand-year-old; thousands of years old
French:
millénaire
— thousand-year-old; thousands of years old
Georgian:
ათასწლოვანი
(atasc̣lovani)
— thousand-year-old; thousands of years old
German:
tausendjährig
— thousand-year-old; thousands of years old
Hungarian:
évezredes
— thousand-year-old; thousands of years old
Hungarian:
ezeresztendős
— thousand-year-old; thousands of years old
Hungarian:
ezeréves
— thousand-year-old; thousands of years old
Italian:
millenario
— thousand-year-old; thousands of years old
Macedonian:
илјадаго́дишен
(iljadagódišen)
— thousand-year-old; thousands of years old
Polish:
tysiącletni
— thousand-year-old; thousands of years old
Romanian:
milenar
— thousand-year-old; thousands of years old
Spanish:
milenario
— thousand-year-old; thousands of years old
Catalan:
mil·lenari
— occurring every thousand years
Finnish:
tuhannen vuoden välein
— occurring every thousand years
French:
millénaire
— occurring every thousand years
Italian:
millenario
— occurring every thousand years
Macedonian:
илјадаго́дишен
(iljadagódišen)
— occurring every thousand years
Russian:
тысячеле́тний
(tysjačelétnij)
— occurring every thousand years
Spanish:
milenario
— occurring every thousand years
Swedish:
tusenårig
— occurring every thousand years
Finnish:
vuosituhantinen
— occurring at, or relating to, the beginning or end of a millennium
Macedonian:
миле́ниумски
(miléniumski)
— occurring at, or relating to, the beginning or end of a millennium
Catalan:
mil·lenari
— referring to the thousandth anniversary of an event or happening
Chinese Mandarin:
一千年的
(yīqiānniánde)
— referring to the thousandth anniversary of an event or happening
Finnish:
tuhatvuotis-
— referring to the thousandth anniversary of an event or happening
French:
millénaire
— referring to the thousandth anniversary of an event or happening
Italian:
millenario
— referring to the thousandth anniversary of an event or happening
Macedonian:
илјадаго́дишен
(iljadagódišen)
— referring to the thousandth anniversary of an event or happening
Macedonian:
илјада́летен
(iljadáleten)
— referring to the thousandth anniversary of an event or happening
Portuguese:
milenar
— referring to the thousandth anniversary of an event or happening
Russian:
тысячеле́тний
(tysjačelétnij)
— referring to the thousandth anniversary of an event or happening
Spanish:
milenario
— referring to the thousandth anniversary of an event or happening
Swedish:
tusenårig
— referring to the thousandth anniversary of an event or happening
Finnish:
millenniaali-
— of or relating to, or characteristic of, people born in the last two decades of the 20th century
Central Bikol:
milenyal
— person from the generation born in the last two decades of the 20th century
Catalan:
mil·lennista
— person from the generation born in the last two decades of the 20th century
Czech:
mileniál
— person from the generation born in the last two decades of the 20th century
Dutch:
millennial
— person from the generation born in the last two decades of the 20th century
Finnish:
millenniaali
— person from the generation born in the last two decades of the 20th century
French:
millénial
— person from the generation born in the last two decades of the 20th century
French:
millénarial
— person from the generation born in the last two decades of the 20th century
German:
Millennial
— person from the generation born in the last two decades of the 20th century
Greek:
παιδί της χιλιετίας
(paidí tis chilietías)
— person from the generation born in the last two decades of the 20th century
Indonesian:
milenial
— person from the generation born in the last two decades of the 20th century
Italian:
millennial
— person from the generation born in the last two decades of the 20th century
Japanese:
ミレニアル
(mireniaru)
— person from the generation born in the last two decades of the 20th century
Malay:
milenial
— person from the generation born in the last two decades of the 20th century
Slovak:
mileniál
— person from the generation born in the last two decades of the 20th century
Slovak:
milenián
— person from the generation born in the last two decades of the 20th century
Spanish:
millennial
— person from the generation born in the last two decades of the 20th century
Spanish:
milenial
— person from the generation born in the last two decades of the 20th century
Spanish:
milénico
— person from the generation born in the last two decades of the 20th century
Spanish:
milénica
— person from the generation born in the last two decades of the 20th century
Spanish:
milenita
— person from the generation born in the last two decades of the 20th century
Spanish:
milénial
— person from the generation born in the last two decades of the 20th century
Tagalog:
milenyal
— person from the generation born in the last two decades of the 20th century