Genial expert outlining revolutionary plan (7)
I believe the answer is:
amiable
'genial' is the definition.
(synonyms)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for amiable that I've seen before include "Good-humoured" , "Friendly and good-natured (7)" , "Lovable, friendly" , "Of sweet and friendly disposition" , "'Affable, genial (7)'" .)