primigenial /prī-mi-jēˈni-əl/

1. First or earliest formed or produced
2. Original
3. Primal

• back-row
• back rows
• backs
• backsaw
• backsaws
• backscatter
• backscattered
• backscattering
• backscatters
• backscratch
• backscratched
• backscratcher
• backscratchers
• backscratches
• backscratching
• backscratchings
• back-seat driver
• backset
• backsets
• backsey
• backseys
• backsheesh
• backsheeshed
• backsheeshes
• backsheeshing