Origin: Latin prefix pre-
Presently has 3 different meanings across 1 category:
in the near future
"the doctor will soon be here"
"the book will appear shortly"
"she will arrive presently"
"we should have news before long"
Immediately, at once; quickly.
"The magician promised to present the rabbit presently after finishing his juggling act."
In plain English: Presently means right now or very soon, depending on how it is used in the conversation.
"I will be with you presently, so please wait a moment."
Presently comes from Middle English, where it was formed by adding the suffix "-ly" to the word "present." Originally meaning "at the current time," the term traveled into modern usage with this same sense of immediacy.