(さっそく)

さっそく
adverb
at once, immediately, right away
1. at once, immediately, right away, promptly
Indicates that an action is taken without delay, often in response to something.
早速(さっそく)(はじ)めましょう
Let's get started right away.
I received the email and replied immediately.
I tried out the new recipe right away.

早速(さっそく) conveys acting promptly, often in eager response to new information or an opportunity. It carries a positive nuance of enthusiasm, not just speed.

POSITION:
Typically appears at the beginning of a sentence or directly before the verb.

COMMON PATTERNS:

SIMILAR WORDS:

NOTE:
早速(さっそく) implies willing, eager action. It would sound odd for reluctant or forced immediate action.