1. ((informal) stupid, slow witted or dull) stupid
   - blockheaded, boneheaded, duncical, duncish, fatheaded, thick, thickheaded, thick-skulled, wooden-headed, birdbrained, thick-witted

See also: stupid

• cost-effective
• cost-efficient
• cost-of-living allowance
• cost-of-living benefit
• cost-of-living index
• cost-plus
• cost-plus contract
• cost-pull inflation
• costa
• Costa Rica
• Costa Rican
• xerographic copier
• xerographic printer
• xerography
• xeroma
• xerophagy
• xerophile
• xerophilous
• xerophilous plant
• xerophthalmia
• xerophthalmus
• Xerophyllum
• Xerophyllum tenax
• xerophyte
• xerophytic