ἀστοχία

A. missing the mark, failing, Phld. Vit. p.41 J. (pl.), Plu. 2.800a (pl.); ἀστοχίαι τῶν ἔργων Cat.Cod.Astr. 2.162.6.

2. imprudence, thoughtlessness, error, Plb. 2.33.8, etc.