Exclude, omit (5,3)
I believe this clue is a double definition.
'exclude' is the first definition.
(I know that exclude can be written as leave out)
'omit' is the second definition.
(synonyms)
(Other definitions for leave out that I've seen before include "Omit, overlook" , "Drop" , "Omit, do not include" , "Forget" , "Omit or exclude" .)