Hoarse means rough and harsh in the voice from strain. What is left after a night of shouting.
The causes are a cold, a football match, or too much talking, and the word describes the voice rather than the person, though you can say somebody is hoarse. It is a temporary condition, which separates it from gruff, which is how a voice simply is. The fixed phrase is shouting yourself hoarse. Take care with the spelling, since horse is a different word altogether and the two sound identical.
1adjectivehoarseOf a voice, rough and harsh from strain or illness.
“He was hoarse by the end of the match.”
Proto-Germanic
*haisaz
Old English
hās
Middle English
hors
English, today
hoarse
From Middle English hors, hos, from Old English hās, hārs, from Proto-Germanic haisaz, haisraz, akin to Old Norse háss (West Norse) and heiss (East Norse) (whence Icelandic hás, Norwegian Nynorsk hås, Norwegian Bokmål hes and Swedish hes).
Etymology from Wiktionary, CC BY-SA