Rushes around inside the house, carelessly (5)
I believe the answer is:
races
'rushes' is the definition.
('race' can be a synonym of 'rush')
'around inside the house carelessly' is the wordplay.
'around' says the letters should be written in reverse.
'inside' says the answer is hidden in the clue.
'secar' can be found hidden inside 'the house carelessly'.
'secar' back-to-front is 'RACES'.
(Other definitions for races that I've seen before include "Runs" , "Goodwood events" , "Speed competitions for various peoples" , "Running competitions" , "Moves very fast" .)