| English noun: investigation | 
| 1. | investigation (cognition) an inquiry into unfamiliar or questionable activities | 
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 | Samples | There was a congressional probe into the scandal. 
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 | Synonyms | probe | 
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 | Broader (hypernym) | enquiry, inquiry, research | 
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 | Narrower (hyponym) | fishing expedition | 
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| 2. | investigation (act) the work of inquiring into something thoroughly and systematically | 
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 | Synonyms | investigating | 
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 | Broader (hypernym) | work | 
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 | Narrower (hyponym) | analysis, count, counting, empiricism, enquiry, enumeration, examination, examination, inquiry, numeration, police investigation, police work, reckoning, research, scrutiny, search, tabulation, tally, tap, testing, wiretap | 
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