Thoroughgoing

After many years of study and teaching, as well as ongoing consultation with fellow members of the prestigious Academy of Esperanto, a Swedish Esperantist has now compiled the fifteenth edition of a thoroughgoing, consistent grammar that accurately describes the salient features of the international language.

Source: tatoeba (9555467)

First of all, we need a thoroughgoing discussion.

Source: tatoeba (10927856)

He did a thoroughgoing job of cleaning up the broken glass.

Source: wiktionary

It must be reiterated, as, for the purpose of these Memoranda, the deep lesson of History and Time, that all else in the contributions of a nation or age, through its politics, materials, heroic personalities, military eclat, &c., remains crude, and defers, in any close and thorough-going estimate, until vitalized by national, original archetypes in literature.

Source: wiktionary