Adjective: costly (costlier,costliest)
kóst-lee- Having a high price
"costly jewellery";
- dear, high-priced, pricey, pricy, spendy [N. Amer, informal]
- Entailing great loss or sacrifice
"a costly victory";
- dearly-won
Derived forms: costliest, costlier
See also: expensive
Encyclopedia: Costly