resignful
/ˈrezɪnfl, -ˌfʊl/Definitions
1. adjective
showing or feeling a tendency to give up or lose interest
“After a few failed attempts, her resignful expression hinted at her desire to quit the project.”
2. noun
a feeling of resignation, typically accompanied by a sense of hopelessness or despair
“The team’s resignful mood was palpable after their team leader announced his decision to leave the company.”