A clot is perhaps not readily moved (7)
I believe the answer is:
stoical
'not readily moved' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives occasionally mean the same thing.
'a clot is perhaps' is the wordplay.
'perhaps' is an anagram indicator.
'a'+'clot'+'is'='aclotis'
'aclotis' with letters rearranged gives 'STOICAL'.
Can you help me to learn more?
(Other definitions for stoical that I've seen before include "Enduring hardship without complaining" , "Uncomplaining in the face of adversity" , "able to endure suffering" , "Indifferent to pain and pleasure" , "Long-suffering" .)