Watertightadjective
So tightly made that water cannot enter or escape.
Watertightadjective
(figurative) So devised or planned as to be impossible to defeat, evade or nullify.
Watertightadjective
having no leaks
Watertightadjective
not allowing water to pass in or out
Watertightadjective
without flaws or loopholes;
Airtightadjective
Being impermeable to air or other gases.
Airtightadjective
(figuratively) Having no weak points or flaws.
Airtightadjective
Highly reserved in some matter, particularly tight-lipped or tight-fisted.
Airtightadjective
having no weak points;
Airtightadjective
not allowing air or gas to pass in or out