Unties the French swimming togs (4,2)
I believe the answer is:
lets go
'unties' is the definition.
The definition and answer can be both to do with contact as well as being verbs in their -s form.
Perhaps you can see a link between them that I can't see?
'the french swimming togs' is the wordplay.
'the french' becomes 'le'.
'swimming' indicates an anagram.
'togs' is an anagram of 'tsgo'.
'le'+'tsgo'='LETS GO'
Can you help me to learn more?
(Other definitions for lets go that I've seen before include "fires" , "Come on then, we're off!" , "Order to leave" , "Releases from one's grip" , "Liberates" .)