A person or thing that delays; someone who postpones or puts off action; also, a device that creates a time delay.
From 'delay' + '-er' (one who does). This agent noun formation allows naming of both people and mechanisms that cause delays.
In electronics, a 'delayer' is a circuit component that deliberately slows down signals—it's used in audio production to create echo effects, showing how delays can be artistic, not just annoying.
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