MeanOF

airtight

- adjective (adj)

Meaning: sealed

Synonyms: closed impenetrable impermeable shut
Antonyms: loose open penetrable permeable unclosed unsealed
- adjective (adj)

Meaning: certain

Synonyms: incontestable indisputable invulnerable irrefutable unassailable
Antonyms: possible questionable uncertain

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.