A bumpy approach to one’s way of thinking? (10)
I believe the answer is:
phrenology
'thinking?' is the definition.
The definition and answer can be both related to thinking as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'a bumpy approach to one's way' is the wordplay.
I cannot really see how this works, but
'way' could be 'r' (abbreviation for right) and 'r' is found in the answer.
an anagram of 'one' is 'eno' which is present in the answer.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for phrenology that I've seen before include "Fanciful science" , "Study of cranial bumps" , "pseudoscience" .)