Bothersome type is lurking in shade (8)
I believe the answer is:
nuisance
'bothersome type' is the definition.
The answer and definition can be both related to thinking as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'is lurking in shade' is the wordplay.
'lurking in' means one lot of letters goes inside another (I've seen this in other clues).
'shade' becomes 'nuance' (synonyms).
'is' placed inside 'nuance' is 'NUISANCE'.
Can you help me to learn more?
(Other definitions for nuisance that I've seen before include "Annoying thing/person" , "Something which annoys" , "Tiresome person or event" , "Irritant or botheration" , "Annoying person/thing" .)