single-minded
adjective
- without distraction
Wiktionary
adj
- Intensely focused and concentrated on purpose, thinking of only one goal, undistractable.
“They consider it an earnest of the epoch to come that it fell to the lot of Abraham Lincoln, the single-minded son of the working class, to lead his country through the matchless struggle for the rescue of an enchained race and the reconstruction of a social world.”
“Ruthless and single-minded, the Roekaar's propaganda describes their intent to drive all alien invaders, both Milky Way and kett, out of the Heleus Cluster.”
- Honest, sincere, straightforward.