meticulous and thorough; carefully planned; scrupulous
Emphasizes extreme attention to detail and completeness in planning, preparation, or execution. Often used in formal or business contexts.
Thanks to his meticulous and thorough planning, the project succeeded.
Meticulous and thorough preparation is necessary.
綿密 means 'detailed' or 'minute', while 綿密周到 adds the nuance of being thorough and covering all aspects.
周到 means 'thorough' or 'careful', but 綿密周到 combines both detail and thoroughness for a stronger emphasis.
A compound of 綿密 (detailed, minute) and 周到 (thorough, careful). The exact historical derivation is uncertain, but it is a typical Sino-Japanese four-character compound used in formal writing.