Grudging
/ˈɡɹʌ.dʒɪŋ/
verb
To be unwilling to give or allow (someone something).
To grumble, complain; to be dissatisfied.
To hold or harbour with malicious disposition or purpose; to cherish enviously.
noun
The state of bearing a grudge.
adjective
Unwilling or with reluctance.
“her grudging acceptance that her rival deserved the award”