Dictionary / Vocabulary / 決まり文句
きまりもんく
set phrase; stock phrase; conventional expression; usual wording
Also written 決り文句、きまり文句
決まり文句は便利だ、熟慮の必要がないのだから。
A formula is very convenient, because you need not think about it.
これが彼の決まり文句です。
This is his formula.