にしろ～にしろ／～にせよ～にせよ (ni-shiro-ni-seyo): Whether A or B
～にしろ～にしろ／～にせよ～にせよ (ni-shiro-ni-seyo)
Meaning
Whether A or B
Formation and usage
A + にしろ／にせよ + B + にしろ／にせよ
Notation: N = noun; V dictionary = dictionary-form verb; V stem = the stem before ます; plain clause = plain-form clause; negative stem = the form before ない. Follow the attachment shown above.
Explanation
Lists alternatives before stating a conclusion that applies to all; distinguish the single concessive use.
Examples
会議に出るにしろ、出ないにしろ、連絡してください。
Whether you attend the meeting or not, please let me know.
試験に出るにしろ、出ないにしろ、連絡してください。
Whether you attend the exam or not, please let me know.
研修に出るにしろ、出ないにしろ、連絡してください。
Whether you attend the training session or not, please let me know.
発表会に出るにしろ、出ないにしろ、連絡してください。
Whether you attend the presentation event or not, please let me know.
面接に出るにしろ、出ないにしろ、連絡してください。
Whether you attend the interview or not, please let me know.
How related patterns differ
としたら/とすれば sets an assumption. さえ～ば presents a condition considered sufficient, whereas ないことには presents a necessary condition. てからでないと sets an ordering prerequisite. ても and としても describe a result that still holds under the stated condition.