English Reference
verb

retain

v.
US /ɹiˈteɪn/ UK /ɹɪtˈeɪn/ re·tain UK spelling retained, retains

  1. 01 B2 Upper Intermediate Formal

    to keep something or continue to have it rather than losing it or giving it away.

    to continue to possess or enjoy a quality, right, or feature; to keep something in place rather than abolishing or losing it.

    Simple

    The company managed to retain most of its customers despite the price increase.

    In context

    The historic building has managed to retain many of its original features, including the ornate stained-glass windows and hand-carved wooden doors.

    Usage

    Transitive verb taking a direct object.

  2. 02 B2 Upper Intermediate Academic Education

    to keep facts or information in your mind.

    to keep information in the memory; to absorb and hold knowledge over time.

    Simple

    I find it hard to retain all these new vocabulary words without practicing them.

    In context

    Students who engage in active recall are significantly more likely to retain complex scientific concepts than those who rely on passive reading.

    Usage

    Often used in academic contexts regarding learning and cognitive psychology.

  3. 03 B2 Upper Intermediate Technical Science

    to hold or keep a substance inside, like a sponge holding water.

    to hold or keep a substance within a physical body or structure.

    Simple

    Certain types of soil retain water much better than others.

    In context

    The patient was advised to reduce salt intake because his body was starting to retain too much fluid.

    Usage

    Common in medical and environmental science contexts.

  4. 04 C1 Advanced FormalTechnical Law

    to pay a professional, like a lawyer, to work for you when you need them.

    to secure the services of a professional, especially a legal consultant, by paying a preliminary fee.

    Simple

    The family decided to retain a lawyer to help them with the contract.

    In context

    The corporation moved to retain a top-tier legal firm to represent them in the upcoming patent dispute.

    Usage

    Usually refers to the act of paying a 'retainer' fee to keep a professional available.

Usage retain information

Villa have sold Morgan Rogers , Youri Tielemans and Lucas Digne this summer and there remain serious doubts over whether they will be able to retain Ezri Konsa.

The Guardian· 15 Aug 2026

City have also been linked with Chelsea’s Enzo Fernández and retain an interest.

The Guardian· 16 Aug 2026

Etymology 1

From Late Middle English reteinen, retein (“to continue to keep, retain; to continue to possess; to possess; to contain; to draw back, retire; to hold back, restrain; to keep in mind, remember; to take back, repossess; to appoint; to engage in one’s service, employ, hire”) [and other forms], from Anglo-Norman reteiner, retenir [and other forms], Middle French retenir, and Old French retenir (“to keep back, retain; to keep, maintain, preserve; to possess; to engage in one’s service, employ; to detain; to hold back, restrain; to remember”) (modern French retenir), from Vulgar Latin retinīre, from Latin retinēre, the present active infinitive of retineō (“to keep or hold back, detain, retain; to hold in check, stop; to hold fast, maintain; to keep in mind, remember”) (compare Late Latin retineō (“to keep engaged in one’s service”)), from re- (prefix meaning ‘again’) + teneō (“to grasp, hold; to hold fast, restrain; to possess; to keep in mind, remember”) (ultimately from Proto-Indo-European ten- (“to extend, stretch”)). Etymology 1 sense 1.10 (“to declare (a sin) not forgiven”) is derived from John 20:23 in the Bible, in Late Latin quorum retinueritis, retenta sunt, and in Koine Greek ἄν τινων κρατῆτε, κεκράτηνται: see the 1526 quotation. Cognates * Catalan retenir * Italian retenere (obsolete), ritenere * Portuguese reter * Spanish retener

Etymology 2

Partly: * from Middle English retein, retain (“possession of a sum of money”) […]; and * from the verb (see etymology 1).

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

This entry
Origin ine-pro *ten-
Level B2 · Upper Intermediate
Frequency Common
Updated