Can anyone puerto ricans verify this?
Can any puertoricans verify if these phrases/words are authentic? I dont want to spend my time learning false information. Any help would be deeply appreciated
muchisima graciah
3 Answers
As said above, "muchísima' gracia" is just a different pronouncation due do a slightly different accent - it's not a different phrase.
People in Andalucía in the South of Spain often don't pronounce the final sound/letter of a word either. It'll just take some getting used to. 
Puerto Ricans often will either drop the final s or prnounce the final s as a soft ah sound. It is not concered a good habit and educated speakers do not do this.
Is muchísimas gracias the words/phrase that you are inquiring about? Are you asking if muchisima graciah is a Puerto Rican version of the same?
muchisima (our dictionary entry seems to be missing the accent mark)
