Worries, getting small stroke (6)
I believe the answer is:
caress
'stroke' is the definition.
('caress' can be a synonym of 'stroke')
'worries getting small' is the wordplay.
'worries' becomes 'cares' (I've seen this before).
'getting' is a charade indicator (letters next to each other).
'small' becomes 's' (abbreviation - e.g. clothes size).
'cares'+'s'='CARESS'
(Other definitions for caress that I've seen before include "pet" , "Stroke lovingly" , "Stroke fondly" , "Scares into handle lovingly" , "Stoke affectionately" .)