Betting gets unwelcoming and suggestive (5)
I believe the answer is:
spicy
'suggestive' is the definition.
(thesaurus)
'betting gets unwelcoming' is the wordplay.
'betting' becomes 'sp'.
'gets' is a charade indicator (letters next to each other).
'unwelcoming' becomes 'icy' (I've seen this in another clue).
'sp'+'icy'='SPICY'
'and' is the link.
(Other definitions for spicy that I've seen before include "Highly flavoured" , "Pungently flavoured" , "Aromatic" , "(Of food) hot" , "Piquant or peppery" .)