| a. | 1. | Going through, or to the end or bottom; very thorough; complete. |
| 2. | Going all lengths; extreme; thoroughplaced; - less common in this sense. |
| Adj. | 1. | thoroughgoing - very thorough; exhaustively complete; "an exhaustive study"; "made a thorough search"; "thoroughgoing research" Synonyms: exhaustive, thorough |
| 2. | thoroughgoing - without qualification; used informally as (often pejorative) intensifiers; "an arrant fool"; "a complete coward"; "a consummate fool"; "a double-dyed villain"; "gross negligence"; "a perfect idiot"; "pure folly"; "what a sodding mess"; "stark staring mad"; "a thoroughgoing villain"; "utter nonsense" Synonyms: arrant, double-dyed, sodding, utter, staring, perfect, pure, consummate, stark, everlasting, complete, gross |