n.
Pronunciation: ' la- th ə r
Function: noun
Etymology: Middle English *lather, from Old English l ē athor; akin to Latin lavere to wash ― more at LYE
Date: before 12th century
1 a : a foam or froth formed when a detergent (as soap) is agitated in water b : foam or froth from profuse sweating (as on a horse)
2 : an agitated or overwrought state : DITHER <worked himself into a lather >
– lath · ery \ - th ( ə -)r ē \ adjective