Closer (6)
I believe the answer is:
nearer
'closer' is the definition.
('near' can be similar in meaning to 'close')
This is all the clue.
(Other definitions for nearer that I've seen before include "Closer, not so far" , "Closer - my God to Thee?" , "Closer at hand" , "Well-known hymn '. . . . . . my God to Thee'" , "Not so far away" .)