What it means
こととて expresses a reason or circumstance, meaning “because” or “since.” It presents the preceding situation as an understandable cause, often implying that the resulting inconvenience or imperfection should be excused. This form is literary, formal, and somewhat old-fashioned, and it is especially common in written explanations, apologies, notices, and ceremonious speech rather than in ordinary conversation.
Usage note
こととて is not a neutral everyday replacement for から or ので. With a noun, it normally requires の, and with a na-adjective it requires な. The politeness difference belongs to the rest of the sentence; こととて itself does not change.
How to use it
初めてのこととて、多少の不手際はご容赦いただけるでしょう。
Since this is a first-time matter, you will probably forgive some shortcomings.
私どもは不慣れなこととて、対応に時間がかかるでしょう。
Because we are inexperienced, responding will probably take time.
彼は若いこととて、判断を誤ることもあるでしょう。
Because he is young, he may sometimes make incorrect judgments.
彼が初めて担当することとて、多少の遅れはご容赦いただけるでしょう。
Since this is his first time handling it, you will probably forgive some delay.
初めてのこととて、多少の不手際はご容赦いただけるだろう。
Since this is a first-time matter, you will probably forgive some shortcomings.
私どもは不慣れなこととて、対応に時間がかかるだろう。
Because we are inexperienced, responding will probably take time.
彼は若いこととて、判断を誤ることもあるだろう。
Because he is young, he may sometimes make incorrect judgments.
彼が初めて担当することとて、多少の遅れはご容赦いただけるだろう。
Since this is his first time handling it, you will probably forgive some delay.
Example sentences
山間の会場のこととて、携帯電話の電波が届きにくい場合がございます。
Since the venue is in a mountainous area, mobile phone reception may be difficult to obtain.
不慣れな作業のこととて、手順に誤りがございましたらご容赦ください。
Because this is an unfamiliar task, please forgive us if there are any errors in the procedure.
創刊号のこととて、編集上の不備がございましたら、