unfutile
/ʌnˈfjuːtɪl/Definitions
1. adjective
not futile, but having a potential for success or effectiveness.
“The team’s plan seemed unfutile at first, but they eventually found a way to make it work.”
2. adverb
in a manner that is not futile or ineffective.
“The team worked unfutilely hard to complete the project, but their efforts paid off in the end.”