Synonyms of airtight in English:

airtight


See definition of airtight

adjective

1‘an airtight container’

SYNONYMS

sealed, closed, shut tight, tight, impermeable, hermetically sealed

watertight, waterproof

ANTONYMS

leaky

2‘he had an airtight alibi’

SYNONYMS

indisputable, unquestionable, incontrovertible, undeniable, incontestable, irrefutable, unassailable, beyond dispute, beyond question, beyond doubt

foolproof, sound, flawless, watertight, conclusive, without loopholes

ANTONYMS

flawed