Using adjective as adverb

I’ve heard a line in a song contained “…I slept peaceful on your shoulder…”. Is this correct from a native speaker point of view?
Is peaceful here an adverb without a -ly form, or does it relate more to object “I” (like “I was peaceful and I slept…”)

My situation is using “loud” as adverb with “dispute” verb. Is it appropriate to say “They dispute too loud”?

Thanks in advance,


When adjectives are used to modify a verb, they are called “flat adverbs.” Do they modify the subject or the verb? That’s a good question, and it probably depend on the actual sentence, and even for a given sentence, the perceptions of native English speakers may differ.

“They talk too loud” is absolutely fine.

I wouldn’t object to “They argue too loud”, and Google finds a number of hits for “argued too loud”.

However, Google doesn’t find any hits for “disputed too loud,” and it doesn’t sound right to me. I think the reason is that when I hear the verbs “talk” and “argue”, I tend to think of people speaking, but when the verb “dispute” evokes a much more abstract type of disagreement.

Source : Link , Question Author : Zephyr , Answer Author : Peter Shor

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