palpi (noun) feeler: anything that investigates by touch
Sinonime: doubtful,
dubious,
fanciful, far-fetched,
flimsy*, hundred-to-one, iffy,
implausible, inconceivable, not expected, outside chance,
questionable, rare,
slim, slim and none, unbelievable,
uncertain, unconvincing, unheard of,
unimaginable, unlikely, unsubstantial,
weakAntonime: believable,
likely,
ostensible,
plausible,
possible,
probable, tenable