Synonyms of the word

incredible

• adj. Too implausible to be credible; beyond belief; unbelievable.
• adj. Amazing; astonishing; awe-inspiring.
• adj. Marvellous; profoundly affecting; wonderful.

astounding

• v. present participle of astound.
• adj. That astounds or astound.

dumbfounding

• v. present participle of dumbfound.

dumfounding

• v. present participle of dumfound.

fabulous

• adj. Of or relating to fable, myth or legend.
• adj. Characteristic of fables; marvelous, extraordinary, incredible.
• adj. Fictional or not believable; made up.
• adj. (obsolete) Known for telling fables or falsehoods; unreliable.
• adj. (slang) Very good; outstanding, wonderful.
• adj. (slang or euphemistic) Gay or pertaining to gay people.
• adj. (slang) Camp, effeminate.
• adj. (slang) Fashionable, glamorous.

implausible

• adj. Not plausible; unlikely; dubious.

improbable

• adj. Not likely to be true.
• adj. Not likely to happen.

incredulous

• adj. Skeptical, disbelieving, or unable to believe.
• adj. Expressing or indicative of incredulity.
• adj. (largely obsolete, now only nonstandard) Difficult to believe; incredible.

marvellous

• adj. (Britain) Exciting wonder or surprise; astonishing; wonderful.

marvelous

• adj. (US) Exciting wonder or surprise; astonishing; wonderful.

tall

• adj. (of a person) Having a vertical extent greater than the average. For example, somebody with a height of…
• adj. (of a building, etc.) Having its top a long way up; having a great vertical (and often greater than horizontal)…
• adj. (of a story) Hard to believe, such as a tall story or a tall tale.
• adj. (chiefly US, of a cup of coffee) A cup of coffee smaller than grande, usually 8 ounces.
• adj. (obsolete) Obsequious; obedient.
• adj. (obsolete) Seemly; suitable; fitting, becoming, comely; attractive, handsome.
• adj. (obsolete) Bold; brave; courageous; valiant.
• adj. (archaic) Fine; proper; admirable; great; excellent.

unbelievable

• adj. Not to be believed.
• adj. Incredible; so surprising it is almost unable to believe.
• adj. Implausible or improbable.

unconvincing

• adj. not convincing, plausible or believable.
• v. present participle of unconvince.

undreamed

• adj. Alternative form of undreamt.

undreamt

• adj. Not dreamed; not dreamt.

unimagined

• adj. That has not been imagined.

unthinkable

• adj. Incapable of being believed; incredible.
• adj. Inconceivable or unimaginable; extremely improbable in a way that goes against common sense.