forthwith

Forthwith is a related term of expressly.

As adverbs the difference between forthwith and expressly

is that forthwith is immediately; without delay while expressly is in an expressive or explicit manner.

Forthwith is a related term of presently.

As adverbs the difference between forthwith and presently

is that forthwith is immediately; without delay while presently is .

Quickly is a related term of forthwith.

As adverbs the difference between quickly and forthwith

is that quickly is rapidly; with speed; fast while forthwith is immediately; without delay.

As adverbs the difference between forthwith and sudden

is that forthwith is immediately; without delay while sudden is suddenly.

As an adjective sudden is

happening quickly and with little or no warning.

As a noun sudden is

an unexpected occurrence; a surprise.

Forthwith is a related term of soon.

As adverbs the difference between forthwith and soon

is that forthwith is immediately; without delay while soon is (label) immediately, instantly.

As an adjective soon is

occurring within a short time, or quickly.

Forthwith is a related term of instantaneously.

As adverbs the difference between forthwith and instantaneously

is that forthwith is immediately; without delay while instantaneously is without any delay; in an instantaneous manner.

Instantly is a related term of forthwith.

As adverbs the difference between instantly and forthwith

is that instantly is (archaic) urgently; with insistence while forthwith is immediately; without delay.

Forthwith is a related term of directly.

As adverbs the difference between forthwith and directly

is that forthwith is immediately; without delay while directly is in a direct manner; in a straight line or course.

As a conjunction directly is

as soon as.

As adverbs the difference between thereupon and forthwith

is that thereupon is upon that/it, following that/it while forthwith is immediately; without delay.