really bad is not in our dictionary (yet). Here's what it could mean:

Results generated using artificial intelligence.

adjective

Of a notably low standard; exceptionally poor in quality, skill, or pleasantness.

Examples are provided to illustrate usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For her, it's having "a really bad memory".

From BBC • Jun. 3, 2026

“This is a really bad, bad shock that would last a long time,” he said.

From The Wall Street Journal • Jun. 3, 2026