Short commissionaire has time for put-upon person (7)
I believe the answer is:
doormat
'put-upon person' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'short commissionaire has time' is the wordplay.
'short' means to remove the last letter.
'commissionaire' becomes 'doorman' (commissionaire can mean a doorman).
'has' says to put letters next to each other.
'time' becomes 't' (abbreviation).
'doorman' with its final letter removed is 'doorma'.
'doorma'+'t'='DOORMAT'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for doormat that I've seen before include "Badly treated but uncomplaining person" , "Mad root (anag.)" , "Rug (or person) that's walked all over" , "By exit" , "Item for wiping shoes on" .)