| ultraexpensive(adjective, expensive, high-priced, pricey, pricely) |
| unaffordable(adjective, expensive, high-priced, pricey, pricely) |
| unapproachable(adjective, expensive, high-priced, pricey, pricely) |
| unattainable(adjective, expensive, high-priced, pricey, pricely) |
| unavailable(adjective, expensive, high-priced, pricey, pricely) |
| uneconomic |
| unfettered(adjective, free, careless, wild, extravagant) |
| unobtainable(adjective, expensive, high-priced, pricey, pricely) |
| unreserved(adjective, free, careless, wild, extravagant) |
| unrestrained(adjective, free, careless, wild, extravagant) |
| unsparing |
| unstinted |
| unstinting |
| up and down(expression, adjective, idiom, free, careless) |
| usurious(adjective, expensive, high-priced, pricey, pricely) |
| variable(adjective, free, careless, wild, extravagant) |
| vast(adjective, expensive, high-priced, pricey, pricely) |
| volatile(adjective, free, careless, wild, extravagant) |
| waste |
| waste thrift(expression, idiom, prodigality) |