“Slayed” and “slew” can be seen as interchangeable, but it is still considered nonstandard for “slayed” to be used as the past tense of “slay” in the sense of killing violently. This is changing, however, mostly in the US.
“Slayed” and “slew” can be seen as interchangeable, but it is still considered nonstandard for “slayed” to be used as the past tense of “slay” in the sense of killing violently. This is changing, however, mostly in the US.