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noun

relapse

/rɪˈlæps/  ·  say it: rih·LAPS

the return of a disease after improvement

In Medicine & Health

In more detail

1. (noun) a return to illness or a bad condition after improving

2. (verb) to fall back into illness or a bad condition after improving

Examples

How to use relapse

Relapse is widely used in medical contexts to describe the return of symptoms after a period of improvement, particularly in mental health and addiction recovery. It implies a setback after progress and carries the sense that the improvement was temporary rather than permanent. The term is neutral and clinical, though it often carries emotional weight for those experiencing it.

Common phrases

Synonyms

recurrence · return · backsliding · setback · regression

Opposites

recovery · improvement · remission

Word family

relapse (noun) · relapse (verb) · relapsed (adjective)

A common mistake

Learners sometimes use relapse for any illness recurrence without recognizing the implicit idea of prior improvement; relapse specifically means returning to a worse state after having gotten better, not simply getting sick again.

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