Synonym: investigating, probe. Similar words: investigate, investigator, obligation, invest, investor, investment, prestidigitation, direct investment. Meaning: [ɪn‚vestɪ'geɪʃn] 
n. 1. an inquiry into unfamiliar or questionable activities 2. the work of inquiring into something thoroughly and systematically.
n. 1. an inquiry into unfamiliar or questionable activities 2. the work of inquiring into something thoroughly and systematically. 
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151. The investigation had aimed at a loosely organised group of criminals.
152. For such views or criticisms, which are not based on thorough investigation, are nothing but ignorant twaddle.
153. The investigation will rely on existing powers to subpoena documents.
154. If you have any information that is material to the investigation, you should state it now.
155. He ordered disclosure of a medical report to the Metropolitan Police in pursuance of an investigation of murder.
156. This line of investigation could prove to be a complete dead end.
157. Police immediately began an investigation, but did not suspect foul play .
158. When the results of the fraud investigation were announced last week, the staff came up smelling of roses.
159. The singer is currently under investigation for possessing illegal drugs.
160. He drew the conclusion by building on his own investigation.
161. After a fairly exhaustive investigation, they were able to put things right.
162. The police spent three months barking up the wrong tree on the murder investigation.
163. He said he had done nothing wrong to merit a criminal investigation.
164. This investigation has been mismanaged right from the start - I've never seen such a foul-up.
165. Newspaper reporters were given nothing but the bare facts by the Superintendent in charge of the investigation.
166. The investigation will try to find out where the guilt for the disaster really lies.
167. An investigation has been under way for several days into the disappearance of a thirteen-year-old boy.
168. It seemed as if the police had thrown in the towel and were abandoning the investigation.
169. The Canadian police plan to launch an investigation into the deal.
170. A private detective was hired to conduct the investigation .
171. Members of the special investigation group are few in number.
172. The investigation has only just started so the police haven't got much to go on at the moment.
173. The human brain was thought to be inaccessible to experimental investigation.
174. You know what they'll be like if they get a sniff of a murder investigation.
More similar words: investigate, investigator, obligation, invest, investor, investment, prestidigitation, direct investment, invention, allegation, question, in question, invitation, suggestion, conversation, questionnaire, out of the question, beyond question, esterification, convention, conventional, nation, distinction, institution, destruction, restriction, relation, operation, donation, zonation.