### Clue: Phlegmatic son near top (6)
### Answer: STOLID 
 ### Explanation: Definition: Phlegmatic
  S($$s$$on) [TO LID](near,in the direction of – didn't we previously discuss whether near=to was kosher? – top,lid of a vessel and such)   
Defn:  Of an unemotional, sluggish and dull temperament – supposedly the character of one having an overabundance of phlegm.