| Main Entry: | airtight |
| Part of Speech: | adjective |
| Definition: | sealed |
Synonyms: |
closed, impenetrable, impermeable, shut |
Antonyms: |
loose, open, penetrable, permeable, unclosed, unsealed |
| Main Entry: | airtight |
| Part of Speech: | adjective |
| Definition: | certain |
Synonyms: |
incontestable, indisputable, invulnerable, irrefutable, unassailable |
Antonyms: |
possible, questionable, uncertain |
| Main Entry: | impermeable |
| Part of Speech: | adjective |
| Definition: | impenetrable |
Synonyms: |
airtight, dense, hermetic, impassable, impervious, leak-proof, nonporous, sealed, water-resistant, waterproof, watertight |
| Main Entry: | tight |
| Part of Speech: | adjective |
| Definition: | sealed |
Synonyms: |
airtight, blind, blocked, bolted, choking, clumped, cramping, crushing, cutting, fast, fastened, firm, fixed, hermetic, hermetically sealed, impenetrable, impermeable, impervious, locked, nailed, obstructed, padlocked, pinching, plugged, proof, secure, short, shrunken, shut, skintight, slammed, smothering, snapped, sound, stopped up, tied, tied up, uncomfortable, watertight |
| Notes: | the choice of 'tight' or 'tightly' depends on whether it is the result or the application that is emphasized; if it is an enduring state, you would use 'tight' |
Antonyms: |
loose, open, unsealed, wide |
| Main Entry: | sealed |
| Part of Speech: | adjective |
| Definition: | secured |
Synonyms: |
airtight, closed, firm, fixed, impenetrable, shut, tight |
| Main Entry: | waterproof |
| Part of Speech: | adjective |
| Definition: | impervious to water |
Synonyms: |
airtight, impermeable, impervious, sealed |
Antonyms: |
leaky |