| stiff(adjective, expensive, high-priced, pricey, pricely) |
| stupid(adjective, weak, idle, incompetent, worthless) |
| sumptuous(adjective, expensive, high-priced, pricey, pricely) |
| superexpensive(adjective, expensive, high-priced, pricey, pricely) |
| swamped(adjective, lively, active, busy, occupied) |
| ultraexpensive(adjective, expensive, high-priced, pricey, pricely) |
| un-come-at-able |
| unable(inadequate, limited, feeble, useless, vain) |
| unachievable |
| unaffordable(adjective, expensive, high-priced, pricey, pricely) |
| unconscionable(adjective, expensive, high-priced, pricey, pricely) |
| undeliverable |
| undiscoverable |
| uneconomical(adjective, expensive, high-priced, pricey, pricely) |
| unfruitful(inadequate, limited, product, feeble, useless) |
| unfunctional(weak, stupid, idle, useless, incompetent) |
| ungettable |
| unprofitable(stupid, idle, inadequate, feeble, useless) |
| unpurposed(weak, stupid, idle, useless, incompetent) |
| unreasonable(adjective, expensive, high-priced, pricey, pricely) |