1) First 2) Inaugural 3) Initiative 4) Introductory 5) Maiden 6) Opening 7) Serving to set in motion 1) Initiative 2) Maiden 3) Opening 
• (a.) Tending or serving to initiate; introducing by instruction, or by the use and application of symbols or ceremonies; elementary; rudimentary. • (n.) An introductory act or rite. • (a.) Suitable for an introduction or beginning; introductory; prefatory; as, an initiatory step.
In·i'ti·a·to·ry adjective 1. Suitable for an introduction or beginning; introductory; prefatory; as, an initiatory step. Bp. Hall. 2. Tending or serving to initiate; introducing by instruction, or by the use and application of symbols or ceremonies; elementary; rudime...
introductory; initial: an initiatory step toward a treaty. · serving to initiate or admit into a society, club, etc.