Occasionally okays raise, acknowledging invocation for mercy? (5)
I believe the answer is:
kyrie
'acknowledging invocation for mercy?' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'occasionally okays raise' is the wordplay.
'occasionally' means one should take alternating letters (letters taken at regular intervals or occasions).
'okays'+'raise'='okaysraise'
The alternate letters of 'okaysraise' are 'KYRIE'.
Can you help me to learn more?
(Other definitions for kyrie that I've seen before include "Greek prayer" , "- - eleison" , "Part of the Mass" , "First section of Mass" , "First word of Latin Mass" .)