(~s, investigating, ~d)
Frequency: The word is one of the 1500 most common words in English.
If someone, especially an official, ~s an event, situation, or claim, they try to find out what happened or what is the truth.
Gas officials are investigating the cause of an explosion which badly damaged a house in Hampshire...
Police are still investigating how the accident happened.
VERB: V n, V wh, also V
investigation (investigations)
He ordered an investigation into the affair...
N-VAR: oft N into n