English Reference

Word

relapse

Phoneticsre·lapse, stress on the second syllable

/ɹiˈɫæps/

Countable noun

Definition

n. a time when someone gets sick again after they seemed to be getting better. It is also used when someone starts a bad habit again after they had stopped.

n. a deterioration in health after a period of improvement; the recurrence of a disease or a return to addictive behaviour.

Examples

“He was doing well, but he suffered a relapse last week.”

“The doctor warned that stopping the medication too early could lead to a sudden relapse of the infection.”

“While the initial recovery was promising, the patient experienced a minor relapse during the third month of treatment, necessitating a more aggressive therapeutic intervention.”

Examples

simple

“He was doing well, but he suffered a relapse last week.”

contextual

“The doctor warned that stopping the medication too early could lead to a sudden relapse of the infection.”

complex

“While the initial recovery was promising, the patient experienced a minor relapse during the third month of treatment, necessitating a more aggressive therapeutic intervention.”

Usage

Often used with the verbs 'suffer', 'have', or 'experience'.

Real-World Examples

“I was able to put aside the walking stick (at least between relapses) and resume typing my long overdue PhD thesis.”
The Guardian 15 Aug 2026
“This finding suggests it might be possible to identify people who are at risk of relapsing by screening for BNST activity when someone is given access to alcohol.”
The Conversation 14 Aug 2026

Etymology

From Latin relapsus, past participle of relabi (“to slide back, fall back”), from re- (“back”) + labi (“to slip, slide, fall”).

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

Domain

Medicine

This entry

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
Frequent
Level
C1 · Advanced
Updated

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English Reference