truism
nounUK /ˈtruː.ɪ.zəm/
US /ˈtruː.ɪ.zəm/
A truism is something that is so obviously true that it feels silly to say it.
It is a truism that everyone needs sleep.
OTHER MEANINGS
2. A statement that is true but so well known that mentioning it adds little or nothing new.
Saying that water is wet is a truism.
3. A self-evident truth that needs no proof.
The truism that time passes quickly was repeated at every reunion.
4. A dull or overused remark presented as if it were a fresh insight.
His speech was full of truisms about hard work and success.