Adult, bored, taking time to get dressed (7)
I believe the answer is:
attired
'dressed' is the definition.
(attiring is a kind of dressing)
'adult bored taking time' is the wordplay.
'adult' becomes 'a'.
'bored' becomes 'tired' ('tired' can be similar in meaning to 'bored').
'taking' means one lot of letters goes inside another.
'time' becomes 't'.
'tired' going around 't' is 'ttired'.
'a'+'ttired'='ATTIRED'
'to get' acts as a link.
(Other definitions for attired that I've seen before include "Dressed or clothed" , "surrounded by duds" , "Turned out" , "Wearing clothes" , "got up" .)