c. 1300, slete, either from an unrecorded Old English *slete, *slyte, related to Middle High German sloz, Middle Low German sloten (plural) "hail," from Proto-Germanic *slautjan- (source also of dialectal Norwegian slutr, Danish slud, Swedish sloud "sleet"), from root *slaut-.
sleet (v.)
early 14c., from sleet (n.). Related: Sleeted; sleeting.
If the temperature rises above freezing, it will probably sleet
sleeper
sleeping
sleepless
sleep-over
sleepy
sleet
sleeve
sleeveless
*sleg-
sleigh
sleight