1. Conforming to the same principles or course of action over time 
2. Showing little if any change
   - static, stable

See also: consistent, unchangeable, unchangingness

• feria
• ferial
• ferine
• Fermat
• fermata
• ferment
• fermentable
• fermentation
• fermentation alcohol
• fermentative
• fermenting
• fermentologist
• fermi
• Fermi-Dirac statistics
• fermion
• fermionic
• fermium
• fern
• fern ally
• fern family
• fern genus
• fern palm
• fern rhapis
• fern seed
• Fernand Leger