Roger droned to us, unfortunately (10)
I believe the answer is:
understood
'roger droned to us unfortunately' is the definition.
I can't tell whether this definition defines the answer.
'droned to us unfortunately' is the wordplay.
'unfortunately' indicates anagramming the letters (a bad or unfortunate spelling).
'droned'+'to'+'us'='dronedtous'
'dronedtous' is an anagram of 'UNDERSTOOD'.
Can you help me to learn more?
(Other definitions for understood that I've seen before include "Taken as 23 [READ]" , "Comprehended" , "Accepted, implied" , "Got" .)