omatoimisessa
The word "omatoimisessa" is a Finnish grammatical form. It is the inessive plural of the adjective "omatoiminen". "Omatoiminen" itself translates to "self-reliant", "proactive", or "taking initiative". Therefore, "omatoimisessa" would indicate a state of being "in a self-reliant manner" or "among those who are self-reliant".
To understand its usage, consider the grammatical case. The inessive case in Finnish denotes being inside something.
For example, a sentence might describe a project that was completed "omatoimisessa" by a team, implying that