One's statement, argument, or point of view; what someone has to say in their own defense or explanation.
彼にも言い分があるだろうから、まず話を聞こう。
He probably has his own point to make, so let's hear him out first.
先生は生徒の言い分を冷静に聞いた。
The teacher calmly listened to the student's explanation.
言い分は分かるが、規則に従わなければならない。
I understand your point, but you still have to follow the rules.
A complaint, objection, or grievance expressed by someone.
彼女は給料に対する言い分を上司に直接伝えた。
She directly told her boss her complaint about the salary.
クレーム窓口に多くの言い分が寄せられた。
Many complaints were received at the customer service desk.
彼の言い分は感情的で説得力に欠けていた。
His grievances were emotional and lacked persuasiveness.