There are a total of 1,289 Slang words compiled in this comprehensive list. The selection includes authentic, commonly used terms from diverse English varieties, regional slang, recent internet coinages, and historically significant expressions.

Slang words are informal expressions used by particular groups to signal identity, emotion, or efficiency of speech. They often feature creative wordplay, metaphor, and rapid change across time and place. Slang ranges from playful abbreviations and in-group markers to strongly stigmatized or reclaimed insults. They help writers, translators, and learners capture natural, contemporary voice.

Interesting and little-known facts about Slang words:
– There are roughly 7,000 living languages worldwide, and most have active slang systems that evolve faster than standard vocabularies.
– English reaches about 1.5 billion speakers globally (native plus learners), which amplifies cross-regional slang borrowing.
– Social platforms accelerate spread: TikTok reached roughly 1 billion monthly users by 2021, helping terms circulate internationally in weeks.
– Corpus updates and dictionaries add hundreds of informal senses each year, reflecting slang moving into mainstream usage.
– Neuroscience research shows familiar slang can trigger stronger social and emotional responses than literal equivalents.

The alphabetical index links to A–Z lists for quick lookup of each term. Each letter list shows these data columns: Word, Meaning, Example sentence, Region/origin, Register (formal/informal/pejorative), Date or first attested, Source and frequency, and Variant spellings.