Rapid speech of salesperson with new decorative design (7)
I believe the answer is:
pattern
'decorative design' is the definition.
(I've seen this in another clue)
'rapid speech of salesperson with new' is the wordplay.
I cannot quite understand how this works, but
'new' could be 'n' (common abbreviation eg NT for New Testament) and 'n' is found in the answer.
'rapid speech' could be 'patter' (I've seen this before) and 'patter' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for pattern that I've seen before include "Stencil" , "Blueprint, design" , "Arrangement of decorative motifs" , "Representative sample" , "trend" .)