com: Although usage guides generally advise that continual may be used only to mean “intermittent” and continuous only to mean “uninterrupted,” the words are used interchangeably in all kinds of speech and writing with no distinction in meaning: The President's life is under continual (or continuous ) scrutiny. Continuous (or continual ) bursts of laughter punctuated her testimony. The adverbs continually and continuously are also used interchangeably.
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