Missing, lacking.

(chiefly predicative) Wrong; faulty; out of order; improper or otherwise incorrect.

(archaic) Wrongly; mistakenly / Astray. / Imperfectly.

(obsolete) Fault; wrong; an evil act, a bad deed.

The state or quality of being amiss.

Liable to be lost.

(obsolete) deprivation; loss

The quality of being amissible; the possibility of being lost.

plural of amiss

To be unhelpful or inappropriate: usually used in the negative, as "not go amiss", to express that something would be welcome or useful. / Used other than figuratively or idiomatically: see go, amiss.