Hospital department entertained by youngster kept unwillingly (4-2)
I believe the answer is:
pent-up
'kept unwillingly' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs can sometimes define each other.
'hospital department entertained by youngster' is the wordplay.
'hospital department' becomes 'ENT' (abbreviation for Ear, Nose and Throat department).
'entertained by' means one lot of letters goes inside another (inserted letters are hosted or entertained).
'youngster' becomes 'pup' (a pup is a young dog).
'ent' going into 'pup' is 'PENT-UP'.
Can you help me to learn more?
(Other definitions for pent-up that I've seen before include "Held back, confined" , "Dammed or repressed" , "Russian city" , "Confined like feelings or water behind dam" , "Repressed, emotions say" .)