Giving tip, diner weirdly brave (8)
I believe the answer is:
intrepid
'brave' is the definition.
(I know that brave can be written as intrepid)
'giving tip diner weirdly' is the wordplay.
'giving' means one lot of letters go next to another.
'weirdly' is an anagram indicator.
'tip' next to 'diner' is 'tipdiner'.
'tipdiner' is an anagram of 'INTREPID'.
(Other definitions for intrepid that I've seen before include "I printed this way, being daring" , "Brave and fearless" , "Novel" , "Unfearing" , "Fearlessly adventurous" .)