cast-iron

a cast-iron promise or arrangement is one that can be trusted completely (always before noun) No new business comes with a cast-iron guarantee of success.

Common Names:

Name	Pronounced	Usage
Cledwyn	-	Welsh
Solveiga	-	Latvian, Lithuanian
Elkins	['elkinz]
Loyd	[lɔid]
Angelica	an-JEL-i-kə (English), ahn-JE-lee-kah (Italian)	English, Italian, Romanian, Literature
Kaleigh	KAY-lee, KA-lee	English (Modern)