Slangy (adjective)

1. Informal or nonstandard in language or expression.
2. Characteristic of or resembling slang.
3. Using informal language or expressions.

Origin:

From the word "slang" meaning "informal or nonstandard language".

Examples:

1. He spoke in a slangy way that was hard to understand.
2. The movie had a lot of slangy dialogue.
3. He used a lot of slangy words in his text message.
4. The teenager's slangy way of speaking made it hard for her parents to understand her.
5. The book had a slangy writing style that was enjoyable to read.