1Common sense; the generally accepted knowledge, manners, or sensible judgment that most members of society are expected to know and follow.
それは常識だ。
That's common sense.
常識で考えればわかるはずだ。
You should be able to understand it using common sense.
社会人としての常識を身につけてください。
Please learn the common-sense behavior expected of a working adult.
彼の言動は常識を疑われるレベルだった。
His words and actions were at a level that made people question his common sense.