Immediately means right away, without waiting or delay. It can also mean very soon after something else happens.
From "immediate" plus the adverbial suffix "-ly." It carries over the sense from Latin "immediatus" of "with nothing in between," now applied to time.
When instructions say "Do this immediately," they’re really trying to jump to the front of your mental priority line. In emergency medicine and aviation, deciding what truly needs to happen immediately can be the difference between safety and disaster.
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