untenable (adj) - unable to be supported, maintained, or held; indefensible or unsustainable [uhn-ten-uh-buhl]
BREAKDOWN: UN- (not) + TEN- (hold) + -ABLE (able to)
tenable means able to be maintained, defended, or held against attack or objection; supportable
“For any thinking person, it (perpetual happiness) is untenable. If you're a thinking person, you're upbeat sometimes, sad sometimes.” —Ron Suskind
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