ばこそ (ba-koso): Precisely because; only because
～ばこそ (ba-koso)
Meaning
Precisely because; only because
Formation and usage
Vば／い-adjective ければ／Nならば + こそ
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
Emphasizes the real reason, often explaining something seemingly contradictory, not a normal hypothetical condition.
Examples
会議の成功を願えばこそ、厳しい意見を言うのだ。
It is precisely because I want the meeting to succeed that I speak frankly.
試験の成功を願えばこそ、厳しい意見を言うのだ。
It is precisely because I want the exam to succeed that I speak frankly.
研修の成功を願えばこそ、厳しい意見を言うのだ。
It is precisely because I want the training session to succeed that I speak frankly.
発表会の成功を願えばこそ、厳しい意見を言うのだ。
It is precisely because I want the presentation event to succeed that I speak frankly.
面接の成功を願えばこそ、厳しい意見を言うのだ。
It is precisely because I want the interview to succeed that I speak frankly.
How related patterns differ
せいで attributes a bad result to a cause; あまり makes excess the cause. ものだから often explains an excuse; とあって gives a special actual circumstance. ゆえに and こととて are literary; ばこそ singles out the very reason.