Absorbing (11)
There are a few possibilities for this:
(Other definitions for entertained that I've seen before include "Amused" , "Hosted" , "considered" .)
(Other definitions for apprehended that I've seen before include "Caught" , "Arrested - understood" .)
(Other definitions for pleasurable that I've seen before include "Enjoyable" , "Such as gives enjoyment" , "Delightful" .)
'absorbing' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for interesting that I've seen before include "Gripping" , "worthy of note" , "Arousing curiosity" , "Arousing attention" , "Curious" .)
'absorbing' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for enthralling that I've seen before include "Patriotic work by Sibelius" , "Deeply fascinating" , "Fascinating; enslaving" , "Keeping spellbound" .)
(Other definitions for influential that I've seen before include "Dominant or powerful" , "Telling" .)
(Other definitions for preoccupied that I've seen before include "Deep in thought" , "Absorbed" , "Totally engrossed (by an idea)" .)
(Another definition for surrounding that I've seen is " Encircling".)
'absorbing' is the definition.
(I know that absorbing can be written as fascinating)
This is all the clue.
(Other definitions for fascinating that I've seen before include "Beguiling" , "Arousing great interest - curious" , "Absorbing" , "Intriguing" , "Bewitching" .)
'absorbing' is the definition.
(thesaurus)
This is all the clue.
(Another definition for captivating that I've seen is " Beguiling".)