Sentence:  ...were anyone to have seen them stumbling under the light of the newly risen moon they would have found little splendour in the appearance of either, but Big Hugh was without doubt the most trampish and tousled of the pair with his long scruffy overcoat muddy and besmirched with filth and sickness, his hair <WSD>splatched</WSD> across his chalky face and his eyelids hovering endlessly on an eerie borderline between waking and sleeping. 
Meaning of the word marked with <WSD> tags:  To move in a manner that causes splashing or spreading of material.