1. most characterized by or containing slang; most informal in language
Usage: superlative form of slangy

Examples

• That was the slangiest conversation I’ve ever heard.
• The slangiest character in the novel spoke in street vernacular.
• Her slangiest expressions came out when she was with her friends.
• The slangiest part of the dictionary contained words I’d never heard.
• He used his slangiest vocabulary during the casual interview.
• The slangiest dialogue made the movie feel authentic to teenagers.