Yes, "promptly" is an adverb. The -ly is usually a good indication that a word is an adverb.
What is the adverb in this sentence the train left promptly ay 642 p.m?
The suffix in promptly is -ly. The -ly changes prompt to an adverb.
The word promptly is an adverb. It means to do something soon and quickly.
It's "promptly" to describe how the train leave
The word 'promptly' is the adverb form of the adjective prompt.The abstract noun form for the adjective 'prompt' is promptness.
The adverb is spelled diligently (promptly, thoroughly, and meticulously).
adverb of time
An adverb of negation.
The word 'kind' is a noun and an adjective.The word kind becomes an adverb when combined with the word of; the adverb is kind of, an adverb of degree.The word can also become an adverb of Manner when the letters "ly" are added to the end of the word - "Kindly"
it is an adverb of time
It is an adverb of manner