Definitions

1. adjective

extremely careful and precise in details; thorough and thoroughgoing

“She is a meticulous researcher, always double-checking her sources.”

2. noun

a person who is extremely careful and precise in details; a person who is thorough and thoroughgoing

“He’s a bit of a perfectionist and can be quite meticulous about the smallest details.”

3. adverb

in a meticulous manner; very carefully and precisely

“She works meticulously on every project, ensuring that every detail is correct.”