verb / noun
finish
FIN-ish/ˈfɪnɪʃ/
The final completion of a piece of work.
The artist finishes the puzzle by placing the last piece into its matching gap.

Etymology
Latin finire meant both setting bounds and bringing something to an end. That connection treats completion as reaching a limit, beyond which the activity does not continue.
In context
So the only way you're going to accurately know how much it costs to finish the project is if you have an accurate schedule and you're accurately forecasting the duration of the works.
More examples
- We finished the repairs just before the rain started.
- He manages each project from start to finish.
- I'm finishing the report and will send it shortly.
Forms
finish · finishes · finished · finishing