immediately

In an immediate manner; instantly or without delay.

I hope we can begin immediately.

His unruly hair was slicked down with water, and as Jessamy introduced him to Miss Brindle his face assumed a cherubic innocence which would immediately have aroused the suspicions of anyone who knew him.

Without any intervening time or space.

A tri-tone chime whistle, operated from the cab by a flexible cable passing down the right hand handrail, is mounted on the top of the smokebox immediately behind the chimney.

As soon as, the moment that.

Near-synonym: once

My dog is an open book: immediately he smelled our dinner, he grew more interested in our activities.