The word "poof" has a complex and uncertain etymology. It is believed to have originated from multiple sources:
Imitative: It may have emerged as an imitation of the sound made by something that explodes or puffs up, such as a balloon or a bag.
Onomatopoeia: It could also be an onomatopoeia, representing the sound of something puffing up.
Diminutive Form: It is also thought to be a diminutive form of the word "puff," which means "a small, sudden blast of air or wind."
Meaning:
A sudden, quick expulsion of air or gas
A soft, fluffy mass of material
A bombastic or boastful person or speech
An exclamation expressing surprise or disapproval
Origin:
The first recorded use of "poof" as an exclamation dates back to around 1850. It became popular in the early 20th century, particularly in its use as a comic expression of surprise or disapproval.
In its other meanings, "poof" has also been in use since the early 19th century, referring to a sudden burst of air, a mass of material, or a boastful individual.