amiss

not functioning properly; "something is amiss"; "has gone completely haywire"; "something is wrong with the engine"

away from the correct or expected course; "something has gone awry in our plans"; "something went badly amiss in the preparations"

in an improper or mistaken or unfortunate manner; "if you think him guilty you judge amiss"; "he spoke amiss"; "no one took it amiss when she spoke frankly"

in an imperfect or faulty way; "The lobe was imperfectly developed"; "Miss Bennet would not play at all amiss if she practiced more"- Jane Austen