exceptionless
Adjective
Meaning
Without exception.
Source: Webster's dictionarySynonyms
Examples
It is less important to escape pain than to avoid exceptionless rules.
Assimilation between contiguous segments are ( diachronically speaking) exceptionless sound laws rather than sporadic, isolated changes.
Bloomfield's work on Swampy Cree provided data to support the predictive power of the hypothesis of exceptionless phonological change.
Sound change is exceptionless: if a sound change can happen at a place, it will.