Word
rollback
Phoneticsroll·back, stress on the first syllable
US/ˈɹoʊɫˌbæk/
UK/ɹˈəʊlbæk/
Definitions
01reversing a policy or price
B2 · Upper Intermediate Countable noun
n. the act of changing a rule or price back to how it was before.
n. the reversal of a policy, regulation, or price change to a previous state.
“The supermarket announced a rollback on milk prices to help families with rising costs.”
“Environmental groups protested the government's proposed rollback of clean water regulations, fearing a return to higher pollution levels.”
Antonyms
02undoing a computer operation
C1 · Advanced Countable noun Computing Technical
n. returning a computer system or database to an earlier, safe version after an error.
n. the operation of restoring a database or software system to a previous consistent state, typically after a failed transaction or update.
“The system crash forced a rollback to the backup created last night.”
“The DevOps team initiated an immediate rollback of the latest deployment after the monitoring tools detected a critical memory leak in production.”
Synonyms
Antonyms
03loss of engine power
C2 · Proficiency Countable noun Science Technical
n. a sudden, unplanned drop in power from a jet engine.
n. an uncommanded reduction in the thrust of a jet engine, often resulting from a technical malfunction.
“The pilot noticed an engine rollback during the climb and decided to return to the airport.”
“Investigators determined that the crash was caused by a dual-engine rollback triggered by ice crystals entering the fuel system.”
Synonyms
04to return to a previous state
B2 · Upper Intermediate
v. to change something back to an earlier version or lower level.
v. to restore a system, price, or regulation to a previous state. Transitive — requires a direct object.
“The company decided to rollback the new software update because it was too slow.”
“The administration plans to rollback several trade tariffs in an effort to ease diplomatic tensions with neighboring countries.”
Real-World Examples
“We also look at Badenoch’s plans to build 50,000 new prison places in England and Wales, and the government’s rollback on jury trials.” Etymology
The noun is a deverbal from roll back. The verb is a back-formation from the noun despite being redundant to roll back.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Domains
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Occasional
- Level
- C1 · Advanced
- Updated
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