He was the 'lone' [='only, sole'] official to vote against the plan.
He had the reputation of being a 'lone wolf' in high school.
a 'lone' traveler [=a traveler who is alone]
(..) It failed. The second was set to strike at John himself, when he was still a child. As before, the Resistance was able to send a lone warrior. A protector for John. It was just a question of which one of them would reach him first. I need your clothes, your boots, and your motorcycle. (..)1991 Terminator 2: Judgment Day