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unsustainable
adjective
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How to pronounce unsustainable:

Definition of unsustainable:

unsustainable (adjective):
without reason or justification
not capable of being prolonged or continued not sustainable

Synonyms for unsustainable:

flawed
groundless
indefensible
indemonstrable
insupportable
invalid
shaky
unprovable
unreasonable
unsound
unsupportable
untenable
unverifiable
weak

Antonyms for unsustainable:

able to hold water
acceptable
arguable
believable
condonable
credible
defendable
defensible
excusable
feasible
forgivable
impregnable
justifiable
justified
legitimate
logical
long-term
maintainable
pardonable
plausible
rational
reasonable
reliable
secure
sensible
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Other 5-syllable words

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The part of the syllable with the highest pitch or loudest volume is called the syllable nucleus, typically a vowel.

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