1. in the ninth place (used to introduce the ninth point in a series)
Usage: formal

Examples

• First, we need to gather materials. Second, we must prepare the workspace. Ninthly, we should test our results.
• The report outlined several concerns, and ninthly, it addressed the budget shortfall.
• Ninthly, I would like to thank all the volunteers who made this event possible.
• The professor listed his requirements: firstly attendance, secondly participation, and ninthly, a final project.
• Ninthly and finally, we must consider the long-term implications of this decision.