Synonyms of the word

impossible

• adj. Not possible; not able to be done or happen.
• adj. (colloquial, of a person) Very difficult to deal with.
• adj. (mathematics, dated) imaginary.
• n. (obsolete) an impossibility.

hopeless

• adj. Without hope; despairing; not expecting anything positive.
• adj. Giving no ground of hope; promising nothing desirable; desperate.
• adj. Without talent, not skilled.

impossibility

• n. Something that is impossible.
• n. (uncountable) The quality of being impossible.
• n. (obsolete) Inability; helplessness.

impracticable

• adj. Not practicable; impossible or difficult in practice.
• adj. Of a passage or road: impassable.
• adj. (obsolete) Of a person or thing: unmanageable.
• n. (obsolete) An unmanageable person.

impractical

• adj. Not practical; impracticable.

inconceivable

• adj. unable to be conceived, unbelievable.

infeasible

• adj. Not feasible.

insufferable

• adj. Not sufferable; very difficult or impossible to endure.

insurmountable

• adj. Incapable of being passed over, surmounted, or overcome; insuperable;.

intolerable

• adj. Not tolerable; not capable of being borne or endured; not proper or right to be allowed; insufferable;…
• adj. Extremely offensive or insulting.

out

• adv. Away from home or one's usual place, or not indoors.
• adv. (of the sun, moon, stars, etc.) Visible in the sky; not covered by clouds, fog, etc.
• adv. Away from; at a distance.
• adv. Away from the inside or the centre.
• adv. Into a state of non-operation; into non-existence.
• adv. To the end; completely.
• adv. Used to intensify or emphasize.
• adv. (cricket, baseball) Of a player, disqualified from playing further by some action of a member of the opposing…
• adv. (procedure word, military) A radio procedure word meaning that the station is finished with its transmission…
• prep. (nonstandard, contraction of out of) Away from the inside.
• prep. (colloquial) outside.
• n. A means of exit, escape, reprieve, etc.
• n. (baseball) A state in which a member of the batting team is removed from play due to the application of…
• n. (cricket) A dismissal; a state in which a member of the batting team finishes his turn at bat, due to…
• n. (poker) A card which can make a hand a winner.
• n. (dated) A trip out; an outing.
• n. (chiefly in the plural) One who, or that which, is out; especially, one who is out of office.
• n. A place or space outside of something; a nook or corner; an angle projecting outward; an open space.
• n. (printing, dated) A word or words omitted by the compositor in setting up copy; an omission.
• v. (transitive) To eject; to expel.
• v. (transitive) To reveal (a person) to be gay, bisexual, or transgender.
• v. (transitive) To reveal (a person or organization) as having a certain secret, such as a being a secret…
• v. (transitive) To reveal (a secret).
• v. (intransitive, archaic) To come or go out; to get out or away; to become public.
• v. To become apparent.
• adj. (obsolete) Of a young lady: having entered society and available to be courted.
• adj. Released, available for purchase, download or other use.
• adj. (cricket, baseball) Of a batter or batsman: having caused an out called on himself while batting under…
• adj. Openly acknowledging that one is gay or transgender.

unacceptable

• adj. unsatisfactory; not acceptable.
• adj. (linguistics) not conforming to accepted usage.
• n. Something that is not acceptable.

unachievable

• adj. That cannot be achieved (or only with great difficulty).

unattainable

• adj. Impossible to attain or reach; inaccessible, unobtainable or unapproachable; unable to accomplish; beyond…
• n. Anything that cannot be attained.

unbearable

• adj. so unpleasant or painful as to be unendurable.

undoable

• adj. Not doable; impossible to do.
• n. Something that cannot be done; an impossible or impractical task.
• adj. Possible to undo; reversible.

unendurable

• adj. Not to be endured; intolerable.

unfeasible

• adj. Infeasible: not feasible.

unimaginable

• adj. unable to be imagined; inconceivable or mind-boggling; beyond belief.

unrealistic

• adj. Not realistic.

unrealizable

• adj. Not realizable; unable to be achieved or realized.

unsufferable

• adj. Not able to be suffered, difficult or impossible to endure; insufferable.

unsurmountable

• adj. insurmountable.

unthinkable

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

unworkable

• adj. Not workable or operable; not practical; unmanageable.
• n. Something that is not workable, or cannot be made to work.