The definition of incredible is something so unbelievable or so unusual that it is hard to believe.
Not previously known; unfamiliar:
Not likely; improbable; not to be reasonably expected; as, an unlikely event; the thing you mention is very unlikely. Not holding out a prospect of success; likely to fail; unpromising; as, unlikely means.
That can be conceived, understood, imagined, or believed
Capable of eliciting belief or trust.
Capable of reasoning; rational:
Difficult to believe; not plausible.
The definition of flimsy is something which is lacking in strength or thin and easily broken.
Having little bodily flesh or fat; lean or slender.
Not dependable or reliable; questionable
Not solid or heavy; flimsy; light
Not to be believed
Not conceivable in the imagination.
Not likely to be true.
Lacking persuasiveness; unconvincing:
That can be imagined
Find another word for inconceivable. In this page you can discover 30 synonyms, antonyms, idiomatic expressions, and related words for inconceivable, like: contrary to all reason, impossible, fantastic, incredible, unconceivable, strange, unlikely, unthinkable, conceivable, believable and reasonable.