Related by context. Frequent words. (Click for all words.) 62 airtight 51 leaky 51 waterproof 50 weatherproof 48 flimsy 48 impregnable 45 sturdy 44 iron clad 44 lockable 43 sealed 42 ironclad 42 impermeable 42 impenetrable 41 tamper proof 41 bulletproof 40 sealing 40 seaworthy 39 fireproof 39 seal 38 solidity 38 welded 38 unbreakable 38 hermetically sealed 38 creaking 38 pressurized 38 retractable 38 housings 38 porous 37 intact 37 neoprene 37 secure 37 fastened 37 insulated 37 fitted 37 fool proof 37 removable 37 enclosed 36 indestructible 36 foolproof 36 hollow 36 waterproofing 36 durable 36 polycarbonate 36 sturdier 35 reinforced concrete 35 linings 35 withstand 35 sieve 35 operable 35 membrane 35 bullet proof 35 Sealing 35 seals 34 plain sailing 34 protective 34 wire mesh 34 sheeting 34 snug 34 translucent 34 workable 34 breathable 34 failsafe 34 gaskets 34 impervious 34 outer shell 34 permeable 34 elastic 34 bulkhead 33 inbuilt 33 gaping holes 33 brittle 33 IP# [003] 33 mesh 33 fortress 33 thermal insulation 33 transparent 33 bay 33 Sealed 33 Secure 33 carbon fiber 33 resistant 33 insulating 33 unstuck 32 dodgy 32 protected 32 corroded 32 enclosures 32 cylindrical 32 sufficient 32 lock 32 structurally sound 32 breached 32 adhered 32 adequate 32 hinged 32 stainless steel 32 structural integrity 32 collapsible 32 detachable 32 honeycomb 32 fastening