retention

retention — noun

1. the act of continuing to have, use, or keep something or someone, rather than gi

1.nounB2
Definition

the act of continuing to have, use, or keep something or someone, rather than giving it up or letting it go

Example

The company's customer retention rate improved after they introduced a loyalty programme.

collocation: customer retention rate

Many governments have strict policies on data retention for national security reasons.

collocation: data retention

Common collocations
  • customer retention
  • employee retention
  • data retention
  • client retention
  • staff retention
  • talent retention
  • retention rate
  • retention strategy
  • retention policy
Synonyms
  • keeping

    less formal, broader scope

  • maintenance

    emphasizes the effort to keep something in good condition

  • preservation

    focuses on protecting from loss or decay

  • continuation

    stresses the ongoing nature rather than possession

Antonyms
  • loss

    the opposite outcome when retention fails

  • abandonment

    deliberately giving something up

Grammar Patterns

retention of [something]

[adjective] retention

[noun] retention rate

Usage Note

Commonly used in business contexts with a preceding noun such as customer, employee, or data. The compound form (e.g. customer retention) is far more frequent than the prepositional pattern (retention of customers).

Common Mistakes

The company has high retention of employees.
The company has high employee retention.
Use the compound noun form '[noun] + retention' rather than 'retention of [noun]' in most business contexts.
They focus on the attention of customers.
They focus on customer retention.
Do not confuse 'retention' with 'attention'; retention means keeping what you already have.

2. the process of keeping a liquid, heat, or bodily substance inside the body or an

2.nounB2
Definition

the process of keeping a liquid, heat, or bodily substance inside the body or an object, rather than allowing it to leave

Example

The doctor told Nellie that her ankle swelling was caused by water retention.

collocation: water retention

This thick ceramic mug is popular for its excellent heat retention.

collocation: heat retention

Common collocations
  • water retention
  • heat retention
  • fluid retention
  • moisture retention
  • salt retention
  • reduce water retention
Synonyms
Antonyms
  • release

    letting heat or liquid escape

  • loss

    commonly paired with 'heat loss' or 'fluid loss'

Grammar Patterns

retention of [liquid/heat]

[substance] retention

water / heat / fluid retention

Usage Note

When used as a medical term, it typically refers to an abnormal or excessive buildup of fluid in the body. In materials or engineering contexts, it describes the ability of a substance to keep heat or moisture inside.

Common Mistakes

He suffers from water retention on his feet.
He suffers from water retention in his feet.
Use 'in' (location inside the body part), not 'on'.
The retention of heat of this pan is great.
This pan has great heat retention.
The compound form 'heat retention' is more natural than 'retention of heat'.

3. the ability to store information, knowledge, or experiences in your mind and bri

3.nounB2
Definition

the ability to store information, knowledge, or experiences in your mind and bring them back when needed

Example

Nikhil uses flashcards to improve his retention of new vocabulary words.

pattern: retention of [vocabulary]

Good sleep is essential for information retention after a long day of studying.

collocation: information retention

Common collocations
  • memory retention
  • information retention
  • knowledge retention
  • student retention
  • learning retention
  • retention of vocabulary
  • retention of skills
Synonyms
  • memory

    broader; can refer to the stored content itself, not just the ability

  • recall

    focuses on the act of bringing back information

  • remembrance

    more literary, often tied to personal or emotional memories

Antonyms
  • forgetfulness

    the tendency to lose stored information

  • amnesia

    a medical condition involving loss of memory

Grammar Patterns

retention of [information]

memory retention

information retention

Usage Note

Typically uncountable and often paired with a preceding noun that specifies what is remembered (e.g. information retention, memory retention). Unlike recall, retention emphasises the storage phase rather than the act of retrieving.

Common Mistakes

She has good retention for names and faces.
She has good retention of names and faces.
The correct preposition after 'retention' in this sense is 'of', not 'for'.

Word family

  • retain
    verbB2
  • retentive
    adjectiveC1
  • retainer
    nounB2
  • retentiveness
    nounC1

Synonym discussion

Sense: noun/1

All four words relate to holding on to something, but they differ in scope and context. 'Keeping' is the broadest and most everyday term — you can keep a receipt, a secret, or a promise. 'Maintenance' adds the idea of active effort to keep something in working order, like maintaining a car or a friendship. 'Preservation' focuses on protecting something from damage or decay, often used for historical buildings, food, or the environment. 'Continuation' stresses that something keeps going without stopping, such as the continuation of a project or tradition. For example, a museum focuses on the preservation of artifacts, while a company cares about customer retention (keeping), and a school worries about the continuation of its funding.

keepingmaintenance ↗preservation ↗continuation

Common collocations

Nouns

Adverbs

  • long-term retention
  • high retention
  • poor retention
  • successful retention

Phrases

  • retention rate
  • high level of retention
  • focus on retention

Prepositions

  • retention of
  • retention in

Etymology

LatinOld FrenchEnglish

Retention entered English in the 14th century from Old French 'retention', which came from Latin 'retentio' (a holding back). The Latin root 'retinere' means 'to hold back or keep', formed from 're-' (back) and 'tenere' (to hold). The sense of 'keeping in the memory' emerged in the 16th century, while the medical meaning of 'fluid buildup' developed in the 19th century.