out of the question Synonyms

unimaginable impossible inconceivable not up for discussion unrealizable unfeasible unattainable unachievable overinflated not on not an option no question nonpermissible not allowed absolutely impossible not to be thought of totally unlikely not worth considering excessively high utterly impossible beyond the bounds of possibility extremely unlikely not feasible not possible highly unlikely no way beyond belief irresoluble infeasible incredible incomprehensible improbable impractical impracticable implausible hopeless exorbitant ludicrous preposterous unthinkable unworkable unbelievable no-go nonstarter unreasonable unlikely sky-high ridiculous prohibitive absurd