| increased(adjective, expensive, high-priced, pricey, pricely) |
| instrumental(adjective, useful, beneficial, precious, advantageous) |
| invaluably |
| laudable(excellent, noble, satisfying, commendable, praiseworthy) |
| neighborly(useful, beneficial, advantageous) |
| notable(good, great, excellent, best, first-rate) |
| noted(good, great, excellent, best, first-rate) |
| of great price(expression, adjective, idiom, value, inexpedience) |
| of incalculable value |
| of inestimable value |
| of use(expression, useful, beneficial, advantageous) |
| opulence |
| out-of-bounds(adjective, rare, precious, inestimable, irreplaceable) |
| out-of-sight(rare, precious, inestimable, irreplaceable) |
| out of sight(expression, adjective, idiom, fancy, high) |
| outstanding(good, great, excellent, best, first-rate) |
| over-priced(adjective, expensive, high-priced, pricey, pricely) |
| overboard(adjective, expensive) |
| oversold(adjective, expensive) |
| productive(sensible, useful, valuable, beneficial, advantageous) |