selfless
You spelled it correctly; altruistic. Assuming, that is, that 'altruistic' is the word you intend.
integrity
No, the grammatically correct sentence would be: "I am annoyed by the way you behave."
Altruistic is an adjective.
Altruistic preservation is a philosophy of preserving nature for its own sake.
An altruistic person is unselfishly concerned for or devoted to the welfare of others. For example, Mother Theresa was an altruistic person, some say.
* I'm altruistic that way. * Actually, people generally don't. But when they do, it's "just because".
There are several words that can mean to benefit other people before yourself such as altruistic, selflessness, thoughtlessness, and even philanthropy.
Here are some examples:The altruistic mayor was genuinely concerned about the plight of undernourishment children.He married an altruistic woman who thinks more about how to make her husband happy than herself.Jace's altruistic tendencies made him an excellent friend and confidant.She has an altruistic personality and is well suited to work as a nurse.
To behave in a way that is not crazy or energetic. To act in a polite manner.
When an animal may copy another animal and behave the way they behave.