〜（か）ろうが〜（か）ろうが／〜かろうと〜かろうと

Meaning

A concessive-parallel expression using adjectives. It states "whether A or B, the result or attitude does not change either way." Two opposing adjectives are often placed side by side. The adjective stem ＋「かろう」 (the う of conjecture) is repeated, taking the form 「高かろうが安かろうが」「暑かろうと寒かろうと」. 「が」 and 「と」 are almost synonymous and interchangeable. It is written-language-like and somewhat stiff.

Examples

高かろうが安かろうが、必要なものは買う。 Whether it's expensive or cheap, I buy what I need.
暑かろうと寒かろうと、毎朝走ることにしている。 Whether it's hot or cold, I make it a rule to run every morning.
旨かろうがまずかろうが、出されたものは食べる。 Whether it tastes good or bad, I eat whatever is served.
結果がよかろうが悪かろうが、全力を尽くすだけだ。 Whether the result is good or bad, all I can do is give it my all.

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Claude Opus