Slept for two days, affected worse, when admitted (7)
I believe the answer is:
drowsed
'slept' is the definition.
The answer and definition can be both related to bodily activities as well as being past participle verbs.
Maybe there's an association between them I don't understand?
'two days affected worse when admitted' is the wordplay.
'two' says to double the letters.
'days' becomes 'd' (abbreviation for days).
'affected' is an anagram indicator.
'when admitted' means one lot of letters goes inside another.
'd' duplicated is 'dd'.
'worse' is an anagram of 'rowse'.
'dd' going around 'rowse' is 'DROWSED'.
'for' is the link.
Can you help me to learn more?
(Another definition for drowsed that I've seen is " was half-asleep".)