thorough
US /ˈθɝː.ə/
UK /ˈθɝː.ə/

1.
complete with regard to every detail; perfect
:
•
She did a thorough job cleaning the house.
•
The police conducted a thorough investigation.
2.
done or acting with great care and completeness
:
•
He is a very thorough and conscientious worker.
•
You need to be more thorough in your research.