1.
thoroughness, completeness
The quality of being complete and exhaustive, leaving nothing undone.
徹底した調査が必要です。
A thorough investigation is necessary.
徹底的に調べました。
I investigated thoroughly.
徹底的 = thorough (na-adjective form)
準備の徹底が大事です。
Thoroughness in preparation is important.
Noun usage
2.
to be thorough, to enforce thoroughly
To carry out something completely and without exception.
ルールを徹底してください。
Please enforce the rules thoroughly.
安全管理を徹底する。
To enforce safety management thoroughly.
社長は経費削減を徹底するよう指示しました。
The president gave instructions to thoroughly enforce cost reductions.
徹底 means thoroughness or to be thorough.
TRANSITIVITY (as suru verb):
- Can be both transitive and intransitive
- Xを徹底する (enforce X thoroughly)
- Xが徹底する (X becomes thorough)
COMMON PATTERNS:
- 徹底した + noun (thorough ~)
- 徹底的に (thoroughly - adverb)
- 徹底を図る (aim for thoroughness)
DERIVED FORMS:
- 徹底的: thorough (na-adjective)