• fearierite,
• ferrierrite,
• ferririte,
• farririte,
• ferrearite,
• ferriarite,
• ferrierit

• ferret,
• fury,
• Ferried,
• terrace,
• ferrous,
• terrier,
• beret,
• ferrofluid,
• merit.

The adjective form of the word "ferrierite" is "ferrieritic".

The plural form of the word "ferrierite" remains the same as the singular form, meaning it does not change. "Ferrierite" is already plural in itself.

The singular form of the word "ferrierite" is "ferrierite". It is already in the singular form and does not change when referring to a single instance of the mineral.