Definition of watertight
1 : of such tight construction or fit as to be impermeable to water except when under sufficient pressure to produce structural discontinuity
2 : leaving no possibility of misconstruction or evasion <a watertight lease>
Examples of watertight in a sentence
The doors are all watertight.
The evidence against the defendant was watertight.
First Known Use of watertight
WATERTIGHT Defined for English Language Learners
Definition of watertight for English Language Learners
: put or fit together so tightly that water cannot enter or pass through
: too strong or effective to fail or to be defeated
WATERTIGHT Defined for Kids
Definition of watertight for Students
: so tight as to be waterproof <The pipe's joints are watertight.>
Seen and Heard
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