Thoroughgoing — synonyms, definition

1. thoroughgoing (Adjective)

arrant complete consummate double-dyed everlasting exhaustive gross in-depth perfect pure rigorous sodding staring stark thorough unadulterated utter

thoroughgoing (Adjective) — Performed comprehensively and completely. ex. "thoroughgoing research"

thoroughgoing (Adjective) — Without qualification; used informally as an (often pejorative) intensifier. ex. "a thoroughgoing villain"