without delay or hesitation; with no time intervening
"he answered immediately"
"found an answer straightaway"
"an official accused of dishonesty should be suspended forthwith"
"Come here now!"
In an immediate manner; instantly or without delay.
"When the alarm rang, she immediately grabbed her bag and ran out the door."
In plain English: Immediately means right now with no delay at all.
"She called her mother immediately after she arrived home."
Usage: Use immediately to indicate that an action should happen right now with no delay between the request and the response. It is often used to emphasize urgency in instructions or descriptions of events occurring at that exact moment.
directly (as soon as), instantly. Indicates that the independent clause describes something that occurs immediately after the dependent clause's referent does.
"As soon as the power went out, everyone in the house immediately gathered around the candles to find their way."
The word immediately comes from Middle English and was formed by adding the suffix -ly to immediate. It entered English with the meaning of occurring without any delay or intervening time.