Changed “alerted” to “related”, perhaps? (7)
I believe the answer is:
altered
'changed' is the definition.
('alter' can be a synonym of 'change')
'related perhaps?' is the wordplay.
'perhaps?' indicates anagramming the letters (I've seen 'perhaps' mean this).
'related' is an anagram of 'ALTERED'.
'alerted to' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for altered that I've seen before include "Converted" , "Changed, modified" , "Different" , "Reformed" , "Treadle (anag)" .)