Past tense of commentate; provided spoken or written explanation and analysis of events.
From 'commentate' plus the regular English past tense suffix '-ed'. This form standardized in the mid-20th century as broadcasting became widespread.
Sports commentators were 'commentating' before this past tense was widely accepted—language actually lags behind how people speak, so technically many early broadcasters were using the word 'correctly' before dictionaries officially recognized it!
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