relapsus

relapsus [CL relabi+-sus] 1 falling backwards. ~us Osb. Glouc. Deriv. 300 (v. relapsio). 2 falling back into error (esp. heresy). nunc agitur de ~u Proc. A. Kyteler 31; tandem dixit michi episcopus “Ricarde, tu fore es in ~u, ideo caveas” Wyche Ep. 540; 1401 sentenciam de ~u alias ipsum ‥ Will. ‥ latam ‥ recitavit Conc. III 259a; 1422 omnemque errorem et heresim abjuravit et anathematizavit sub pena ~us publici Reg. Cant. III 85.