noun-modifying (irregular)
imperfect; inadequate; careless; incompetent
Prenominal form of 至らない, used to describe something that is insufficient, lacking, or not up to standard. Often appears in humble or self-deprecating contexts.
See also: 至らない
至らぬ点が多々ございますが、よろしくお願いいたします。
There are many shortcomings, but I ask for your kind understanding.
至らぬ説明で申し訳ありません。
I apologize for the inadequate explanation.