investigation
in·ves·ti·gation
noun
1.
an inquiry into unfamiliar or questionable activities
- “there was a congressional probe into the scandal”
2.
the work of inquiring into something thoroughly and systematically
Origin
From Middle English investigacioun, from Old French investigacion, from Latin investigatio. Morphologically investigate + -ion.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.