であれ／であろうと／だろうが／であろうが／～あろうとなかろうと (de-are-darou-ga): Whether; even if
～であれ／であろうと／だろうが／であろうが／～あろうとなかろうと (de-are-darou-ga)
Meaning
Whether; even if
Formation and usage
N + であれ／であろうと／だろうが; V + ようが
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
Introduces concessive conditions or alternatives that do not change the conclusion; attachment varies by word class.
Examples
相手が教師であれ、規則は守ってもらう。
Even if the other person is a teacher, they must follow the rules.
相手が医師であれ、規則は守ってもらう。
Even if the other person is a doctor, they must follow the rules.
相手が指導者であれ、規則は守ってもらう。
Even if the other person is a leader, they must follow the rules.
相手が経営者であれ、規則は守ってもらう。
Even if the other person is a manager, they must follow the rules.
相手が政治家であれ、規則は守ってもらう。
Even if the other person is a politician, they must follow the rules.
How related patterns differ
ながらに and かれ～かれ commonly occur in fixed combinations, not free attachments. こそすれ emphasizes one direction and denies the opposite. を込めて puts feeling into an action; であれ keeps a conclusion regardless of a condition.