Certainly I want to hug daughter (6)
I believe the answer is:
indeed
'certainly' is the definition.
(thesaurus)
'i want to hug daughter' is the wordplay.
'want' becomes 'need' ('need' can be a synonym of 'want').
'to hug' indicates putting letters inside.
'daughter' becomes 'd'.
'need' going around 'd' is 'ndeed'.
'i'+'ndeed'='INDEED'
(Other definitions for indeed that I've seen before include "Expression of interest, incredulity or contempt" , "Without question" , "Yes, truthfully" , "Really - what a surprise!" , "Actually -- denied (anag)" .)