WATERTIGHT Synonyms

• any fabric impervious to water

• a water-resistant coat

• not permitting the passage of water

• make watertight

• having no weak points

• not allowing air or gas to pass in or out

• not open or affording passage or access

• (set theory) of an interval that contains both its endpoints

• not open

• used especially of mouth or eyes

• requiring union membership

• with shutters closed

• not open to the general public

• not having an open mind

• blocked against entry

• immune to attack; incapable of being tampered with

• capable of conceiving

• incapable of being overcome, challenged or refuted

• established irrevocably

• closed or secured with or as if with a seal

• undisclosed for the time being

• determined irrevocably

• apply a non-porous coating to something so as to ensure it is impervious

• covered with a waterproof coating

• (of walls) covered with a coat of plaster

• free from fear or doubt; easy in mind

• free from danger or risk

• not likely to fail or give way

• immune to attack; incapable of being tampered with

• financially safe

• get by special effort

• cause to be firmly attached

• assure payment of

• make certain of

• fill or close tightly with or as if with a plug

• furnish with battens

• impervious to, or not penetrable by, sound

• insulate against noise

• closely constrained or constricted or constricting

• of such close construction as to be impermeable

• firmly or closely

• in an attentive manner

• pulled or drawn tight

• set so close together as to be invulnerable to penetration

• pressed tightly together

• (used of persons or behavior) characterized by or indicative of lack of generosity

• affected by scarcity and expensive to borrow

• of textiles

• securely or solidly fixed in place; rigid

• (of a contest or contestants) evenly matched

• very drunk

• exasperatingly difficult to handle or circumvent

• demanding strict attention to rules and procedures

• packed closely together

• without flaws or loopholes

• not penetrable by bullets

• make bulletproof

• preventing especially liquids to pass or diffuse through

• a wooden warship of the 19th century that is plated with iron or steel armor

• sheathed in iron plates for protection

• inflexibly entrenched and unchangeable

• without flaws or loopholes

• immune to attack; incapable of being tampered with

• impossible to assail

• without flaws or loopholes

• marked by firm determination or resolution; not shakable

• without flaws or loopholes