most airtight (adjective) airtight: sealed
Sinonime: abeyant, budding, conceivable,
dormant, embryonic,
future,
hidden, imaginable,
implied,
inherent, latent,
likely, lurking,
plausible,
possible, prepatent,
probable, quiescent, thinkable, undeveloped, unrealized, within realm of possibility
Antonime: helpless,
impossible,
lacking, unpromising