Quote
Lisa c
Could it be a homonym for "sai lei" meaning 利害?
勢利 and 細利 read the same as /sai3 lei6/
It is not 犀利 , because it read differently as /sai1 lei6 /
Another phrase that read /sai3 lei6/ is 細膩,
細膩 sai3 nei6 - " fine and smooth, exquisite; minute"