Appropriating your ideas, as you thought (10)
I believe the answer is:
telepathic
'thought' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs can occasionally mean the same thing.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for telepathic that I've seen before include "communicating senselessly?" , "Mind-reading" , "Extraordinarily communicative" , "Communicating by thought" , "Able to pick up ideas" .)