| supporting(adjective, relief, reserve, subsidiary, supportive) |
| supportive(adjective, reserve, collateral, subsidiary, subservient) |
| synchronal(adjective, collateral, subsidiary, subservient, subalternate) |
| tied to apron strings(expression, idiom, collateral, subalternate, low-set) |
| to the bottom(expression, idiom, collateral, subalternate, low-set) |
| tributary(adjective, lower, relief, reserve, collateral) |
| tributory(adjective, reserve, collateral, subsidiary, subservient) |
| under(adjective, light, slight, inferior, collateral) |
| under thumb(expression, collateral, subalternate, low-set) |
| underaverage(adjective, lower, subject, collateral, subsidiary) |
| underdeveloped(weak, feeble, tiny) |
| unelevated(collateral, subalternate, low-set) |
| unimportant |
| unreasoning(adjective, collateral, subsidiary, subservient, subalternate) |
| unsustaining(collateral, subalternate, low-set) |
| vicarial(reserve, subsidiary, supportive) |
| zipper |