- relating to a disease that tends to run a definite course without treatment
- I do not like to go to the movies by my self.
- I my self is going to make a sandwich.
- He was a wreck of his former self.
- Knowledge of self increases as one gets older.
- He's not looking like his old self lately.
- He is my best friend, my second self, as it were.
- self noise limited channel自噪声限制信道...