Lifelong in a Sentence 

Definition of Lifelong  

permanent until the person or thing expires

Examples of Lifelong in a sentence

Since there was a lifelong warranty on the new cell phone in the store, I decided to purchase it because it would last forever.  
At 80 years old, Carol and Tina met in kindergarten and to this day have been lifelong friends now living in the nursing home.  
Taking college classes every two to three years allowed this lifelong learner to refresh her skills to improve her career.  

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