Clot got a clue, surprisingly grasping answer (9)
I believe the answer is:
coagulate
'clot' is the definition.
(synonyms)
'got a clue surprisingly grasping answer' is the wordplay.
'surprisingly' indicates anagramming the letters (a surprising ordering of the letters).
'grasping' is an insertion indicator (inserted letters are held or grasped).
'answer' becomes 'a' (abbreviation eg in Q and A).
'got'+'a'+'clue'='gotaclue'
'gotaclue' with letters rearranged gives 'cogulate'.
'cogulate' placed around 'a' is 'COAGULATE'.
(Other definitions for coagulate that I've seen before include "Set" , "(Of blood) solidify" , "Congeal" , "Thicken or clot, like blood" , "Cause to clot" .)