Below are possible answers for the crossword clue Some are airtight.
6 letter answer(s) to some are airtight
ALIBIS
(law) a defense by an accused person purporting to show that he or she could not have committed the crime in question
a defense of some offensive behavior or some failure to keep a promise etc.; "he kept finding excuses to stay"; "every day he had a new alibi for not getting a job"; "his transparent self-justification was unacceptable"
exonerate by means of an alibi
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