English

irrelapsable

From ir + relapse + -able.

Formed from in + relapse + -able

Proto-Indo-European *h₁én ‘in’

Proto-Germanic *in

Proto-West Germanic *in

Old English in

Middle English in ‘inside’

English in

Latin lābor ‘to slip, slide, fall’

Latin relabi ‘to slide back, fall back’

Latin relapsus ‘having slid, glided or sinked back’

Today it means

adj Not liable to relapse; unrelenting; secure.

Language periods are conventional ranges, not dates for this word.

Etymograph / irrelapsable