Past Tense of “slay”
The past tense of slay is slew; the past participle is slain.
Why “slay” behaves this way
"Slay" comes from Old English "slean," a strong verb whose irregular conjugation (slay/slew/slain) has stayed remarkably intact across a thousand years, largely because the word has always carried an elevated, dramatic register unsuited to the kind of everyday regularization that has smoothed out many other originally strong verbs. Its oldest sense — to kill, especially in battle or by violence — remains its primary literal meaning even today, most often found in news headlines, mythology, and fiction rather than casual conversation.
In the 21st century, "slay" (and especially its participle "slayed" or "slaying") has developed a completely separate, wildly popular slang sense meaning to perform exceptionally well or look stunning ("she slayed that performance," "you're slaying today"), and this modern slang usage has notably regularized to "slayed" rather than adopting the traditional "slew/slain" — a clear real-time example of a new figurative sense choosing its own, simpler conjugation rather than inheriting the old irregular one. Video games and fantasy literature both lean heavily on "slay" and "slain" for combat narration, treating the traditional irregular forms as a genre convention that signals epic stakes more effectively than plainer verbs like "kill."
The common confusion
The genuinely interesting confusion here is between two live, parallel conjugations: the traditional literal sense ("the knight slew the dragon," "he was slain in battle") uses irregular slew/slain, while the modern slang sense of excelling or looking great ("she slayed the red carpet") uses regular "slayed" — and using the wrong one for the wrong register (traditional "slain" in a slang context, or slang "slayed" in serious historical writing) can sound distinctly off.
How it's actually used
"Slay" in its traditional sense appears in mythology, fantasy fiction, historical writing, and news headlines about violent death ("dragon slayer," "the giant was slain"), while the newer slang sense ("you slayed it," "that outfit is slaying") belongs to a completely different, much more casual and contemporary register, especially common on social media. Ballroom and drag culture helped popularize the modern slang sense of "slay," which has since spread widely into mainstream youth and internet vocabulary well beyond its original community. A seasoned monster hunter in the story had slain more creatures than anyone could accurately count. A late-night host joked that the guest had absolutely slayed the interview before the segment even ended. A drag performer who has slayed every category at the ball earns serious respect within the community.
Across the tense system
Traditional usage requires "slew" for simple past and "slain" for the participle ("has slain," "was slain"); the newer slang sense uses the regular "slayed" consistently for both simple past and participle ("she slayed," "she has slayed"), never borrowing the older irregular forms. Esports commentary has adopted the modern slang sense of "slayed" enthusiastically, using it constantly to praise a standout play regardless of whether any literal combat occurred in the game itself.
Common real mistakes
The main error, in traditional contexts, is confusing "slew" and "slain" ("he has slew the dragon" instead of the correct "has slain"). A separate, register-based issue is using traditional "slain" where the casual slang sense clearly calls for "slayed," or vice versa, which can read as an odd tonal mismatch. A further point: news headlines occasionally use "slay" and "slain" even in ordinary criminal contexts for their punchy brevity, a stylistic headline convention distinct from the word's more elevated literary register in full sentences.
Examples
- The hero slew the dragon after a long and brutal battle.
- Thousands were slain during the siege, according to the chronicle.
- She absolutely slayed her audition, according to everyone in the room.
- He has slain more mythical beasts in this game than any other player.
- Fans praised how effortlessly she slayed every look on the runway this season.
- Historians debate exactly how many defenders were actually slain during the siege.
Memory trick
Keep two separate mental boxes: the old, heroic "slew/slain" for battles and dragons, and the brand-new, regular "slayed" for modern slang praise — mixing them up is the one real mistake to avoid.