| hotbed(noun, center, middle, target) |
| inside(noun, center, middle, target) |
| interior(noun, center, middle, target) |
| intermediacy(noun, center, middle, target) |
| mainstream(noun, center, middle, target) |
| middle of the road(noun, center, middle, target) |
| midpoint(noun, center, middle, target) |
| midst(noun, center, middle, target) |
| omphalos(noun, center, middle, target) |
| place(noun, center, middle, target) |
| polestar(noun, center, middle, target) |
| quick(noun, center, middle, target) |
| radial point(noun, center, middle, target) |
| root(noun, center, middle, target) |
| seat(noun, center, middle, target) |
| centre |
| middle(average, center, focus, centre, midpoint) |
| middle point(expression, place, heart, focus, middle) |
| nub |
| starting point(expression, root, mainspring, intermediacy) |