Read the dictionary definition of thorough. All definitions for this word.
1. painstakingly careful and accurate
1. our accountant is thorough
2. thorough research
2. performed comprehensively and completely; not superficial or partial
1. an exhaustive study
2. made a thorough search
3. thoroughgoing research
3. without qualification; used informally as (often pejorative) intensifiers
1. an arrant fool
2. a complete coward
3. a consummate fool
4. a double-dyed villain
5. gross negligence
6. a perfect idiot
7. pure folly
8. what a sodding mess
9. stark staring mad
10. a thorough nuisance
11. a thoroughgoing villain
12. utter nonsense
13. the unadulterated truth