careful investigation
noun phraseUK /ˈkeə.fəl ɪnˌves.tɪˈɡeɪ.ʃən/
US /ˈker.fəl ɪnˌves.təˈɡeɪ.ʃən/
A careful investigation is when you look at something very closely and slowly to find out the truth.
The detective did a careful investigation to find the missing keys.
RELATED WORDS
OTHER MEANINGS
2. A formal police process of gathering facts about a crime.
The careful investigation of the robbery took three weeks.
3. A scientific study done step by step to check an idea.
Their careful investigation showed the plant needed more water.
4. A slow, close look at a problem before making a decision.
A careful investigation of the map helped them choose the safest path.