Continual ¹

Definition: Proceeding without interruption or cesstaion; continuous; unceasing; lasting; abiding.

Continual ²

Definition: Occuring in steady and rapid succession; very frequent; often repeated.

continual ³

Definition: seemingly without interruption; chiefly restricted to what recurs regularly or frequently in a prolonged and closely spaced series; "the continual banging of the shutters"

continual ⁴

Definition: `continual'' (meaning seemingly uninterrupted) is often used interchangeably with `continuous'' (meaning without interruption)