is similar to
certain to fail
"the situation is hopeless"
is similar to
not capable of being carried out or put into practice
"refloating the sunken ship proved impracticable because of its fragility"; "a suggested reform that was unfeasible in the prevailing circumstances"
is similar to
not worth considering as a possibility
"a picnic is out because of the weather"
is similar to
impossible to achieve
"an unattainable goal"
see also
without hope because there seems to be no possibility of comfort or success
"in an agony of hopeless grief"; "with a hopeless sigh he sat down"
see also
not practical; not workable or not given to practical matters
"refloating the ship proved impractical because of the expense"; "he is intelligent but too impractical for commercial work"; "an impractical solution"
see also
not realistic
"unrealistic expectations"; "prices at unrealistic high levels"
see also
not capable of being surmounted or overcome
"insurmountable disadvantages"
see also
incapable of being conceived or considered
is an attribute of
capability of existing or happening or being true
"there is a possibility that his sense of smell has been impaired"