General:
* Uniform: This is a good general word for something that is all alike.
* Consistent: This emphasizes that something is always the same, never changing.
* Homogeneous: This implies that all parts are of the same kind or nature.
* Monotonous: This implies a lack of variation, often in a negative sense.
More specific:
* Identical: Emphasizes complete sameness.
* Immutable: This suggests that something is unchangeable and permanent.
* Unvarying: This means not changing or fluctuating.
Other options:
* Stagnant: This implies lack of change or movement, often in a negative sense.
* Static: This suggests a lack of movement or change.
The best word for you will depend on the context. Please provide more information if you need help choosing the most suitable one.