pronto

As adjectives the difference between prompt and pronto

is that prompt is (archaic) ready, willing (to act) while pronto is ready, prepared.

As a noun prompt

is a reminder or cue.

As a verb prompt

is to lead someone toward what they should say or do.

As an adverb quickly

is rapidly; with speed; fast.

As an adjective pronto is

ready, prepared.

As an interjection voila

is "lo! there it is", ta-da, presto.

As an adjective pronto is

ready, prepared.

As adjectives the difference between pronto and accelerated

is that pronto is ready, prepared while accelerated is moving or progressing faster than is usual.

As a verb accelerated is

(accelerate).

As a noun proto

is proton.

As an adjective pronto is

ready, prepared.