Slipped (7)
'slipped' is the definition.
('slide' can be a synonym of 'slip')
This is the entire clue.
(Other definitions for slid that I've seen before include "Moved smoothly along a surface" , "Slipped" , "Moved (eg, on ice)" , "Skidded, slewed" .)
'slipped' is the definition.
(to skid is to slip around)
This is all the clue.
(Other definitions for skidded that I've seen before include "Made slip" , "lost purchase on the road" , "Slid uncontrollably" , "Slid out of control" .)