illuminate

word

Definition

To light something up or make it brighter. It can also mean to explain something clearly or make an idea easier to understand.

Usage & Nuances

Usually formal or literary. Common with literal meaning ('illuminate the room') and figurative ('illuminate a subject'). Not used in casual speech for 'light up'—use 'light' or 'brighten' instead. Often used in academic or descriptive writing.

Example Sentences

The teacher illuminated the topic with clear examples.

basic

Streetlights illuminate the road at night.

basic

The report helped illuminate the causes of the problem.

natural

Candles illuminate the room during a power cut.

basic

Her explanation really illuminated things for me.

natural

Let's use a flashlight to illuminate our way.

natural