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comparative more porous, superlative most porous
Full of tiny pores that allow fluids or gasses to pass through. examples
(figurative) With many gaps. quotations examples
However, Wolves porous defence opened up again to gift Sunderland a foothold in the game - Sessegnon sweeping in a Zenden corner that was inexplicably allowed to bounce in the six-yard box.
2011 May 14, Peter Scrivener, “Sunderland 1 - 3 Wolverhampton”, in BBC Sport
(figurative, by extension) full of loopholes examples