lõpetamisel
Lõpetamisel is an Estonian non-finite form derived from the verb lõpetama (to finish). It is formed from the nominalized verb lõpetamine with the adessive ending -misel, and it expresses the circumstance or time related to finishing. In English, lõpetamisel is often rendered as “in finishing,” “during the completion,” or “upon completion,” depending on the context.
Function and usage: Lõpetamisel functions as an adverbial modifier, describing the state or timing of another
Notes: The form is standard in written Estonian and is part of a broader pattern with -mine