Unobservant (adjective)

Not paying attention to and noticing things.

Origin:

The word "unobservant" is formed from the word "un" and "observant" which means paying attention to and noticing things.

Examples:

1. He was criticized for being unobservant while on duty.
2. She was unobservant and didn't notice the mistake.
3. He was considered unobservant because he missed important details.
4. The unobservant driver didn't see the stop sign.
5. She was unobservant and didn't notice the change in the weather.