"Sluther up now, said Brangwen loudly after this silence had resolved itself out; and Tilly disappeared through the inner door." - DH Lawrence, "The Rainbow"
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sluther — sluth·er … English syllables
sluther — I. ˈsləthə(r), lu̇th intransitive verb ( ed/ ing/ s) Etymology: alteration of slither (I) dialect England : to slip along : shuffle, slither … Useful english dictionary