A humble fan to be moved too deep for words (12)

I believe the answer is:

unfathomable

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'a humble fan to be moved too deep for words' is the definition.
I can't judge whether this defines the answer.

'a humble fan to be moved' is the wordplay.
'be moved' indicates an anagram.
'a'+'humble'+'fan'+'to'='ahumblefanto'
'ahumblefanto' is an anagram of 'UNFATHOMABLE'.

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(Other definitions for unfathomable that I've seen before include "defying comprehension?" , "Soundlessly" , "Too profound to grasp" , "Incapable of being fully understood" .)

I've seen this clue in The Globe and Mail.

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