Hymn appears to mean the most (6)
I believe the answer is:
anthem
'hymn' is the definition.
(synonyms)
'to mean the most' is the wordplay.
'ANTHEM' is hidden in amongst the letters.
However, I am unsure how the hidden word is indicated.
'appears' is the link.
Can you help me to learn more?
(Other definitions for anthem that I've seen before include "The man for a popular song" , "National or religious song" , "air of patriotism?" , "One for doomed youth" , "National or church song" .)