From punch + -proof. <span class="searchmatch">punchproof</span> (comparative more <span class="searchmatch">punchproof</span>, superlative most <span class="searchmatch">punchproof</span>) Resistant to being punched, or punched through....
pickproof pigproof pilferproof plotproof pollenproof pressureproof pryproof <span class="searchmatch">punchproof</span> punctureproof quakeproof rabbit-proof raccoonproof radiationproof radonproof...