Geoff oddly ignored during ridiculous life ban - it's beyond words (9)
I believe the answer is:
ineffable
'beyond words' is the definition.
(I've seen this before)
'geoff oddly ignored during ridiculous life ban' is the wordplay.
'oddly ignored' indicates alternate letters.
'during' is an insertion indicator.
'ridiculous' is an anagram indicator.
The alternating letters of 'geoff' are 'ef'.
'life'+'ban'='lifeban'
'lifeban' with letters rearranged gives 'infable'.
'ef' placed within 'infable' is 'INEFFABLE'.
'it's' acts as a link.
(Other definitions for ineffable that I've seen before include "Too sacred to be uttered" , "Defying description" , "Unable to be described in words" , "Inexpressible" , "Too great to be put into words" .)