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How to spell investigation

Investigation is spelled I-N-V-E-S-T-I-G-A-T-I-O-N.

hear itin·ves·ti·ga·tion/ɪn,vɛstə'ɡeɪʃən/nounHidden vowels

What it means: A thorough inquiry into something.

In a sentence: The detective started an investigation to find the missing puppy.

The part people get wrong

Watch for an unstressed vowel that is hard to hear.

Same family: investigated, investigating, investigative, investigator, inquiry. If you can spell one, the shared part carries to the others.

Where it comes from: “Investigation” comes from the Latin word *investigatio*, from *investigare*, meaning “to track or search after,” like following footprints. It originally suggested literally tracking something, and now it is used for careful, systematic searches for truth or facts.

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