Out of order, snap about family serviettes (7)
I believe the answer is:
napkins
'serviettes' is the definition.
('napkin' can be a synonym of 'serviette')
'out of order snap about family' is the wordplay.
'out of order' is an anagram indicator.
'about' indicates putting letters inside.
'family' becomes 'kin' (synonyms).
'snap' is an anagram of 'naps'.
'naps' going around 'kin' is 'NAPKINS'.
(Other definitions for napkins that I've seen before include "Serviettes" , "Cloth squares to protect clothes while eating" , "Pieces of table linen" .)