leave someone out in the cold
US /liːv ˈsʌm.wʌn aʊt ɪn ðə koʊld/
UK /liːv ˈsʌm.wʌn aʊt ɪn ðə koʊld/
1.
to exclude someone from a group or activity, or to not give them information or help
:
•
They decided to leave him out in the cold when planning the party.
•
Don't leave me out in the cold; tell me what's going on.