Ignoring sound eastern law, leader lost foresight (7)
I believe the answer is:
elision
'ignoring sound eastern law leader lost foresight' is the definition.
I can't tell whether this defines the answer.
'ignoring sound eastern law leader lost foresight' is the wordplay.
'leader' says to take the initial letters.
'lost' indicates an anagram.
'foresight' becomes 'ion' (I can't justify this - if you can you should believe this answer much more).
The first letters of 'ignoring sound eastern law' is 'isel'.
'isel' anagrammed gives 'elis'.
'elis'+'ion'='ELISION'
Can you help me to learn more?
(Other definitions for elision that I've seen before include "Dropping of vowel" , "Omission of syllables in speech" , "Omission (from a book, etc)" , "Omission of a sound in speech" , "Dropping a letter" .)