Antonyms of adj ladder-proof

1 sense of ladder-proof

Sense 1
runproof, ladder-proof, run-resistant -- ((of hosiery) resistant to runs or (in Britain) ladders)

INDIRECT (VIA impervious) -> pervious -- (admitting of passage or entrance; "pervious soil"; "a metal pervious to heat")

Similarity of adj ladder-proof

1 sense of ladder-proof

Sense 1
runproof, ladder-proof, run-resistant -- ((of hosiery) resistant to runs or (in Britain) ladders)
       => impervious (vs. pervious), imperviable -- (not admitting of passage or capable of being affected; "a material impervious to water"; "someone impervious to argument")