Sob uncontrollably, better out of sight (8)
I believe the answer is:
obscured
'out of sight' is the definition.
(I've seen this before)
'sob uncontrollably better' is the wordplay.
'uncontrollably' indicates anagramming the letters (I've seen this in other clues).
'better' becomes 'cured' (after being sick).
'sob' is an anagram of 'obs'.
'obs'+'cured'='OBSCURED'
(Other definitions for obscured that I've seen before include "unnoticed" , "Concealed from view, made indistinct" , "Overshadowed or eclipsed" , "Good news from clinic about schoolboy no longer" , "Hid from view" .)