English UsageComparison guide

Slayed vs. Slew

“Slew” and “slayed” are not simply interchangeable spellings. Cambridge documents the irregular “slew” in the traditional kill sense and also illustrates the modern informal praise/performance use with “slayed,” so the intended sense controls the choice.

Quick answer

Use “slew” for the traditional simple-past form of “slay” meaning kill; “slayed” is common in the newer informal sense meaning impressed or performed extremely well.

Key details

Confusion Familysense-dependent verb forms
Rule Familyverb forms
Termsslayed, slew
Variant ScopeCambridge records slew for the traditional kill sense while informal modern praise/performance uses regularly inflected slayed.

Further guidance

Core difference

Use “slew” for the traditional simple-past form of “slay” meaning kill; “slayed” is common in the newer informal sense meaning impressed or performed extremely well.

Fast Test

If the meaning is literal or literary killing, “slew” is the traditional past form. If the meaning is informal praise or outstanding performance, “slayed” fits that newer sense.

Sense Boundary

Do not replace every “slayed” with “slew.” The verb has developed an informal praise/performance sense whose regular past form is widely represented as “slayed.”

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. SLAY — Cambridge Dictionary (opens in a new tab)Cambridge University Press · Direct dictionary evidence for traditional slay / slew / slain verb forms and sense scope

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For the traditional irregular verb “slay” in its “kill” sense, “slew” is the simple past and “slain” is the past participle. This guide does not extend that historical paradigm mechanically to every newer informal use of “slay.”

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“Cost” and “costed” can both be correct because they serve different verb senses. The ordinary price/loss sense usually stays “cost” in the past, while “costed” is standard when someone estimates or determines a cost.

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