Hitherto
(adverb)
Until now or until the point in time under discussion.
Origin:
Middle english: from old english hithere + to.
Examples:
- Hitherto, I had never seen such a beautiful sunset.
- Hitherto, the company had only operated in the United States.
- Hitherto, the project had been going smoothly.
- Hitherto, the government had ignored the problem.
- Hitherto, the scientist had been unable to explain the phenomenon.