Soak through (8)
(Other definitions for saturate that I've seen before include "steep" , "Drench thoroughly, soak" , "Infuse or fill completely" , "Oversupply" , "Soak completely" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">soak through</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for permeate that I've seen before include "Percolate" , "Flow or spread into every part of" , "Infiltrate" , "Imbue, spread through" , "Seep through" .)