ex

1 of 8

noun (1)

ˈeks 

: one that formerly held a specified position or place

especially : a former spouse or former partner in an intimate relationship

ex

2 of 8

noun (2)

: the letter x

ex

3 of 8

preposition

1

: out of : from: such as

a

: from a specified place or source

b

: from a specified dam

a promising calf by Eric XVI ex Heatherbell

2

: free from : without: such as

a

: without an indicated value or right

—used especially of securities

b

: free of charges precedent to removal from the specified place with purchaser to provide means of subsequent transportation

ex dock

ex

4 of 8

abbreviation (1)

1

example

2

exchange

3

executive

4

express

5

extra

Ex

5 of 8

abbreviation (2)

Exodus

ex-

6 of 8

prefix (1)

e

also occurs in this prefix where only i

is shown below (as in "express") and ks

sometimes occurs where only gz is shown (as in "exact")

1

: out of : outside

exclave

2

: not

exstipulate

3

(ˌ)eks, 

ˈeks

: former

ex-president

ex-

7 of 8

combining form

see exo-

ex-

8 of 8

prefix (2)

variants or before consonants ec-

: out of : away : off

eccentric

ectopic

Examples of ex in a Sentence

Recent Examples on the Web

Noun

The Washington Post reported that Adjepong filed a motion claiming his ex-wife was violating their settlement agreement by preventing him from seeing his child in January 2025. — Chiara Kim, PEOPLE, 28 July 2026

According to a 911 call log, the woman reported the suspect was her ex-boyfriend. — Shambhavi Rimal, Fort Worth Star-Telegram, 27 July 2026

This includes big names like Adrian Newey, Jonathan Wheatley, former chief designer Rob Marshall, ex-head of strategy Will Courtenay and Max Verstappen’s longtime race engineer GianPiero Lambiase — who is McLaren-bound in the coming years. — Madeline Coleman, New York Times, 27 July 2026

Hours before the killings, Lindsay Clancy built a snowman and played with her three kids, her ex-husband testified. — Nicki Brown, CNN Money, 27 July 2026

Word History

Etymology

Noun (1)

ex- entry 1

Preposition

Latin

Prefix (1)

borrowed from Latin ex- (before vowels and voiceless consonants), ē- (from *egz-, before voiced consonants), from ex, ē, preposition, "out of, from," going back to Indo-European *h₁eḱ-s or *h₁eǵh-s, whence also Old Irish a, as "out of, from," Middle Welsh ech, Greek ex, ek, Lithuanian ìš, ìž, Old Church Slavic iz (with unexplained i in Balto-Slavic); (sense 3) borrowed from Late Latin, as in exconsul "former consul," based on Latin ex in the sense "from being, having formerly held (an office)," as in ex assessōre praefectus praetōriī "advanced from the position of judge's assistant to commander of the Praetorian Guard" (Suetonius)

Prefix (2)

borrowed from Greek ex-, ek-, from ex, ek, preposition, "out of, from" — more at ex- entry 1

First Known Use

Noun (1)

1827, in the meaning defined above

Noun (2)

1818, in the meaning defined above

Preposition

circa 1755, in the meaning defined at sense 1

Phrases Containing ex

• deus ex machina
• ex cathedra
• ex-con
• ex-directory
• ex gratia
• ex hypothesi
• ex libris
• ex nihilo
• ex officio
• ex parte
• ex post facto
• ex-voto
• go ex-directory

Rhymes for ex

• becks
• checks
• czechs
• decks
• dex
• flecks
• flex
• hex
• lex
• necks
• pecks
• plex

Kids Definition

ex-

1 of 2 prefix

(ˌ)eks, 

ˈeks

: former

ex-president

ex-

2 of 2

see exo-

Etymology

Prefix

from earlier ex- (prefix), from Latin ex- "out of, from"

Medical Definition

ex

abbreviation

1

examined

2

example

3

exercise

Legal Definition

ex-

1 of 2 prefix

: free from : without

Ex.

2 of 2 abbreviation

Exchequer

Etymology

Prefix

Latin ex from, out of