say it: ree-LAPS
relapse is a verb and noun meaning "deteriorate in health". It carries 3 recorded senses.
go back to bad behavior
“Those who recidivate are often minor criminals”
a failure to maintain a higher state
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for relapse come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.