What it means
にしろ presents a condition that does not change the result: “even if” or “whether or not.” It can follow a noun, a plain-form verb, an i-adjective, or the stem of a na-adjective. It is also common in paired patterns such as AにしろBにしろ, meaning “whether A or B.” The expression often has a firm, written, or formal tone, although it can occur in both familiar and polite sentences.
Usage note
にしろ is not the standalone imperative form of する; the imperative of する is しろ. In an expression such as 静かにしろ, にしろ may be the imperative form of にする, but that is a different construction from the concessive pattern covered here.
How to use it
初心者にしろ、経験者にしろ、基本を確認する必要があります。
Whether one is a beginner or an experienced person, it is necessary to check the basics.
不便にしろ、安全性を優先すべきです。
Even if it is inconvenient, safety should be prioritized.
高いにしろ、品質が確かなら購入する価値があります。
Even if it is expensive, it is worth buying if the quality is reliable.
計画を変更するにしろ、理由を説明してください。
Even if you change the plan, please explain the reason.
初心者にしろ、経験者にしろ、基本を確認する必要がある。
Whether one is a beginner or an experienced person, it is necessary to check the basics.
不便にしろ、安全性を優先すべきだ。
Even if it is inconvenient, safety should be prioritized.
高いにしろ、品質が確かなら購入する価値がある。
Even if it is expensive, it is worth buying if the quality is reliable.
計画を変更するにしろ、理由を説明してくれ。
Even if you change the plan, please explain the reason.
Example sentences
雨にしろ雪にしろ、試合は予定どおり行われます。
Whether it rains or snows, the match will be held as scheduled.
平日にしろ休日にしろ、図書館の利用には登録が必要です。
Whether it is a weekday or a holiday, registration is required to use the library.
紙の申請にしろオンライン申請にしろ、本人確認書類