gritless
/ˈɡrɪtlɛs/Definitions
1. adjective
Lacking grit or determination.
“After the initial enthusiasm wore off, he found himself to be gritless when facing the challenges ahead.”
2. noun
A person who is gritless.
“The coach was disappointed in the team’s performance, calling them a bunch of gritless players who lacked the will to win.”