Crossword Genius

Tireless gulper, half-cut sibling with wine (10)

Ross

I believe the answer is:

persistent

'tireless' is the definition.
(thesaurus)

'gulper half-cut sibling with wine' is the wordplay.
'half cut' indicates taking half.
'sibling' becomes 'sis' (short for sister).
'with' means one lot of letters go next to another.
'wine' becomes 'tent' (type of Spanish wine).
'gulper' cut in half is 'per'.
'per'+'sis'+'tent'='PERSISTENT'

(Other definitions for persistent that I've seen before include "Determined" , "single-minded" , "Dogged" , "Not taking "no" for an answer" , "Endless" .)

I've seen this clue in The Telegraph.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.