DictionaryRoot: dia-
Greek
dia-
through, across; apart
Forms
- dia-
- di- — Used before a vowel in some Greek compounds.
Origin
Greek dia, ‘through’; a connection with the Indo-European word for ‘two’ has been proposed but is uncertain.
Note
Passing through something can also divide it, linking traversal with separation.
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adjective
diabolic
dye-uh-BAH-lik/ˌdaɪəˈbɑlɪk/
Extremely wicked or unpleasant.
Etymology
The Greek “throw across” verb also meant “slander”; its agent noun meant “accuser” and became a name for the Devil. The adjective consequently describes devilish or outrageously wicked behavior.