Got up smartly (6)
I believe the answer is:
dressy
'got' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives can occasionally define each other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for dressy that I've seen before include "Smartly clad, wearing stylish clothes" , "Stylishly attired" , "Smartly clothed" , "'Stylish, smart (6)'" , "swish" .)