— costliness , n.
/kawst"lee, kost"-/ , adj., costlier, costliest .
1. costing much; expensive; high in price: a costly emerald bracelet; costly medical care.
2. resulting in great expense: The upkeep of such a large house is costly.
3. resulting in great detriment: It was a costly mistake because no one ever trusted him again.
4. of great value; very valuable; sumptuous.
5. lavish; extravagant.
[ 1350-1400; ME costli. See COST 1 , -LY ]
Syn. 1. dear, high-priced. See expensive .