Joie de vivre
'joie de vivre' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for zest that I've seen before include "Great enthusiasm and energy" , "Enthusiasm or outer skin of citrus fruit" , "Go" , "Grated lemon skin" , "bit of a lemon" .)
'joie de vivre' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for gaiety that I've seen before include "Merrymaking, festivity" , "Merriment on Dublin's Sth King Street" , "Festive merry feeling" , "Merriment, revelry" , "Jollity, merriment" .)
(Other definitions for esprit that I've seen before include "Vivacious wit" , "... de corps, team spirit" , "Vivaciousness" , "wit from France" , "Vivacity - wit" .)