(intransitive) To fall back again; to slide or turn back into a former state or practice. / (intransitive, medicine, of a disease) To recur; to worsen, be aggravated (after a period of improvement).

The act or situation of relapsing. / (medicine) An occasion when a person becomes ill again after a period of improvement / (obsolete) One who has relapsed, or fallen back into error; a backslider.

simple past tense and past participle of relapse

Third-person singular simple present indicative form of relapse

plural of relapser

One who relapses.

present participle of relapse

(archaic) A relapse.

plural of relapsing

(pathology) an infection caused by certain bacteria of the genus Borrelia, transmitted by lice and ticks