| bottom(noun, adjective, down, beginning, deep) |
| base(noun, low, down, deep, lowest) |
| downstairs(noun, adjective, base, down, beginning) |
| ground(noun, adjective, low, down, beginning) |
| underside(noun, low, base, down, deep) |
| caudal(adjective, down, beginning, basal) |
| caudalis(adjective, down, beginning, basal) |
| down(adjective, beginning, basal) |
| downmost(adjective, down, beginning, basal) |
| downstream(adjective, down, beginning, basal) |
| inferior(adjective, down, beginning, basal) |
| low(adjective, down, beginning, basal) |
| lower(adjective, down, beginning, basal) |
| nadir(noun, down, deep, lowest) |
| nether(adjective, down, beginning, basal) |
| start(noun, down, deep, lowest) |
| under(adjective, down, beginning, basal) |
| underface(adjective, down, beginning, basal) |
| underlying(adjective, down, beginning, basal) |
| underneath(adjective, down, beginning, basal) |