twenty-first

After the twentieth

Twenty-first marks position 21 in a sequence.

Most often encountered in the twenty-first century, meaning the years 2000–2099.

A twenty-first birthday holds special significance in many cultures as the traditional threshold of full adulthood.

As a noun, a twenty-first is one of twenty-one equal parts.

coming-of-age

initiation

Formal admission ceremony

adulthood · independence · responsibility · ceremony · tradition · quinceañera · debut · threshold · milestone

birthday

celebration

Festive event marking occasion

champagne · toast · coming-of-age · bar · nightclub · ID · shots · keys · cake · gifts

amendment

prohibition

Authoritative legal ban

bootlegging · speakeasy · ratification · constitution · legalization

century

modern

Of recent times

globalization · smartphones · AI · sustainability · automation · cybersecurity · millennials · Gen-Z · terrorism · pandemic

ordinal

twentieth

Ordinal for twenty

placement · enumeration · numbering · order · series · counting

Categories
Opposites
ordinal position in sequence

twenty-firstfirst

Position number one

last · final · initial · millionth · ultimate

number type (ordinal vs. cardinal)

twenty-firsttwenty-one

Cardinal after twenty

cardinal · 21

Family

first, twenty, twenty-one

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G