What word means the opposite of erratic?

There are many words that could be considered the opposite of "erratic," depending on the specific context. Here are a few options:

General opposites:

* Steady

* Consistent

* Stable

* Regular

* Predictable

* Reliable

More specific opposites:

* Methodical (if the erratic behavior is disorganized)

* Controlled (if the erratic behavior is uncontrolled)

* Calm (if the erratic behavior is agitated)

* Focused (if the erratic behavior is scattered)

The best opposite word for "erratic" will depend on the specific situation and what aspect of "erratic" you want to contrast.