Extremely funny (10)
'extremely funny' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for hysterical that I've seen before include "Frenzied" , "Violently emotional" , "Wildly funny" , "Over-emotional" , "Uncontrollably laughing or crying" .)
'extremely funny' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for uproarious that I've seen before include "hysterical!" , "extremely funny" , "Very noisy (and funny?)" , "Side-splitting" .)