Extremely good, beautiful, or enjoyable. (Cambridge Dictionary)
If you describe something as sublime, you mean that it has a wonderful quality that affects you deeply. (Collins Dictionary)
Of very great excellence or beauty. (Oxford Dictionaries)
Producing an overwhelming sense of awe or other high emotion through being vast or grand. (Oxford Dictionaries)
To elevate or exalt especially in dignity or honour. (Merriam – Webster)
To render finer (as in purity or excellence). (Merriam – Webster)
To convert (something inferior) into something of higher worth. (Merriam – Webster)
Elevated or lofty in thought, language, etc. (Dictionary.com)
Impressing the mind with a sense of grandeur or power; inspiring awe, veneration, etc. (Dictionary.com)
Supreme or outstanding: (Dictionary.com)
Examples
This is the highest and most sublime prayer, says pope.

https://aleteia.org/2017/11/15/this-is-the-highest-and-most-sublime-prayer-says-pope/
The most sublime films of all time.

https://www.imdb.com/title/tt0037674/?ref_=ttls_li_i
Mahler, sublime and magnificent.

http://alexandershelley.com/news-article/mahler-sublime-and-magnificent/