continual
1. [ adjective ] seemingly without interruption; chiefly restricted to what recurs regularly or frequently in a prolonged and closely spaced series
Examples:

"the continual banging of the shutters"

Related terms: sporadic persistent constant perennial insistent running incessant recurring everlasting
2. [ adjective ] `continual' (meaning seemingly uninterrupted) is often used interchangeably with `continuous' (meaning without interruption)
Related terms: continuous
Similar spelling:   continually
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  Contini
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  counting
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  contingency