Basic Guidelines For English Spellings
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See US English definition of relapse
See UK English definition of relapse
See Spanish definition of recaída
1‘although most children remain well after this procedure, a few relapse’
recover, improve
2‘the old woman relapsed into silence’
1‘one of the patients later suffered a relapse’
recovery, improvement
2‘he foresaw a relapse into an excessively objective kind of theology’