Emotional part of hospital involved in various ailments (11)
I believe the answer is:
sentimental
'emotional' is the definition.
(similar in meaning)
'part of hospital involved in various ailments' is the wordplay.
'part of hospital' becomes 'ent' (abbreviation for ear, nose and throat dept).
'involved in' is an insertion indicator.
'various' indicates an anagram.
'ailments' with letters rearranged gives 'simental'.
'ent' going inside 'simental' is 'SENTIMENTAL'.
(Other definitions for sentimental that I've seen before include "Soft-hearted; romantic" , "pathetic" , "Expressing tender emotions" , "with emotional effect" , "Mawkish" .)