Give way, leaving space deferentially (4)
I believe the answer is:
cede
'give way' is the definition.
(thesaurus)
'leaving space deferentially' is the wordplay.
'leaving' indicates a hidden word (the answer must leave the confines of the clue).
'CEDE' is hidden in the letters of 'space deferentially'.
(Other definitions for cede that I've seen before include "Give up one's rights" , "Give up (territory)" , "Deliver" , "Give up rights or possession" , "Give up (eg, power)" .)