Worker joining a group of detectives - that's soothing (7)
I believe the answer is:
antacid
'soothing' is the definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?
'worker joining a group of detectives' is the wordplay.
'worker' becomes 'ant' (worker is a type of ant).
'joining' says to put letters next to each other.
'group of detectives' becomes 'CID' (Criminal Investigation Department).
'ant'+'a'+'cid'='ANTACID'
'that's' is the link.
Can you help me to learn more?
(Other definitions for antacid that I've seen before include "remedy for tummy trouble?" , "Medicine to settle the stomach" , "Substance used to treat stomach upsert" , "Stomach-soothing medicine" , "Indigestion remedy" .)