Definition of "Amiss" :
adjective: not functioning properly
"Something is amiss."
adverb: in an imperfect or faulty way
"Miss Bennet would not play at all amiss if she practiced more."
adverb: in an improper or mistaken or unfortunate manner
"If you think him guilty you judge amiss."
adverb: away from the correct or expected course
"Something went badly amiss in the preparations."