unfathomable

باللغة العربية: لَا يُسْبَر غَوْرُهُ، غَامِض، لَا يُدْرَك

1. Especially of depth: physically incapable of being measured; immeasurable.
2. Impossible to grasp the extent of, or to fully know or understand. (figuratively) · The sheer number of warriors the enemy attacked with was unfathomable.