What is antonym for dim?

The best antonym for dim depends on the context:

If "dim" refers to light**:

* Bright

* Luminous

* Brilliant

* Glowing

If "dim" refers to understanding**:

* Sharp

* Intelligent

* Astute

* Keen

If "dim" refers to color**:

* Vibrant

* Bright

* Intense

* Saturated

If "dim" refers to size**:

* Large

* Big

* Vast

* Spacious

If "dim" refers to outlook**:

* Optimistic

* Hopeful

* Positive

* Cheerful

Choose the antonym that best fits the specific meaning of "dim" in your context.