English Reference

Word

mobility

Phoneticsmo·bil·i·ty

US/moʊˈbɪɫəti/

UK/məʊbˈɪlɪti/

Definitions

01physical movement

B2 · Medicine

n. the ability to move your body or parts of your body freely and easily.

n. the capacity for physical movement, particularly the range of motion in joints or the ability of an individual to walk and travel independently.

“The athlete did daily exercises to improve the mobility in her hips.”

“After the surgery, the patient worked closely with a physiotherapist to regain full mobility in his right leg before returning to work.”

Usage

Often used with 'in' to specify a body part or 'of' for the person.

Antonyms

immobilitystiffness

02social status

C1 · Sociology

n. the ability for people to move to a higher or lower social or professional level.

n. the movement of individuals, families, or groups through a system of social hierarchy or stratification.

“Education is often seen as the best way to achieve upward social mobility.”

“The report suggests that social mobility has stalled in the region, as children from low-income families struggle to access high-paying professional careers.”

Academic

Usage

Commonly paired with 'upward', 'downward', or 'social'.

Antonyms

03military movement

C1 · Military

n. the ability of a military group to move quickly to a new position.

n. the quality of a military force that permits it to move from place to place while retaining its primary mission capabilities.

“The army used light vehicles to ensure high mobility in the desert.”

“Modern warfare relies heavily on air mobility to deploy troops rapidly to remote locations where ground transport is impossible.”

Technical

Synonyms

manoeuvrabilitytransportability

04scientific movement

C2 · Science

n. the speed or ease with which particles move through a liquid or gas.

n. the ability of charged particles or molecules to move through a medium, often in response to an electric field.

“The mobility of the ions increased as the temperature of the liquid rose.”

“Researchers measured the electron mobility within the new semiconductor material to determine its efficiency for high-speed computing.”

Technical

Synonyms

05the common people

C2

n. a funny or old-fashioned way to talk about a large crowd of ordinary people.

n. a humorous or derogatory term for the common people or a rabble, formed as a play on the word 'nobility'.

“The speaker was worried about how the mobility in the streets would react to the news.”

“In the satirical pamphlet, the author mocks the 'mobility' for their fickle nature and lack of political sophistication.”

Archaic · Humorous · British English · Slang

Teaching tip

This sense is extremely rare in modern English and is mostly found in 18th or 19th-century literature.

Synonyms

Antonyms

Real-World Examples

“My mother was the same; after a lifetime being able-bodied, cancer took her mobility.”
The Guardian · 4 Aug 2026
“Shared mobility charity CoMoUK's 2025 report suggests that for more than half of the people using rental e-scooters, the most common use was travelling to work or school.”
BBC News · 22 Jul 2026

Etymology

From Middle French mobilité, and its source, Latin mōbilitās (“mobility”).

Blend of mob + nobility

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

mobileAdjectivemobilityNoun

Domains

MilitaryPhysicsSociology

This entry

Level
C1 · Advanced
Frequency
Common
Updated

Scan code

englishreference.com/q/mobility

English Reference