Incompetent psychiatrist entered, not getting less? (12)
I believe the answer is:
unshrinkable
'getting less?' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'incompetent psychiatrist entered' is the wordplay.
'incompetent' becomes 'unable' (I've seen this before).
'psychiatrist' becomes 'shrink' (informal term for a psychiatrist).
'entered' means one lot of letters goes inside another.
'unable' placed around 'shrink' is 'UNSHRINKABLE'.
'not' acts as a link.
Can you help me to learn more?
(Another definition for unshrinkable that I've seen is " (Of fabric) retaining its size".)