What are the opposite words for turn off?

"Turn off" is a colloquial term that refers to the act of stopping, disconnecting, or ceasing something. While there are several antonyms for "turn off," the most common are "switch on," "start up," "activate," and "ignite." These antonyms imply the reverse action of turning something off, such as a device or appliance. Other antonyms for "turn off" that are less commonly used include "entertain," "engage," "impress," and "excite." These antonyms bear a different connotation and may describe a person's reaction or emotional response to something, rather than the physical act of turning an object off.

Antonym of the day

johnny come lately
expert, local, national.