であればalso: でればMeanings1expression, conjunctionif it is (the case that ...); if soConditional form of である, used to state a logical condition or supposition. Often found in formal or written contexts.彼かれが来くるのであれば、私わたしも行いきます。If he is coming, I will go too.明日あしたが休やすみであれば、旅りょ行こうに行いけるのに。If tomorrow were a holiday, I could go on a trip.