juvenescence：返老还童，变年轻   

词根词缀： -juven-年轻 + -escence名词词尾

• selfish
• self-knowledge
• selfless
• self-love
• self-mutilation
• self-opinionated
• selfsame
• self-starter
• selkie
• sell
• seller
• Sell One's Birthright for a Mess of Pottage
• Sellotape
• seltzer
• selvage
• semantic
• semantics
• semaphore
• semblance
• semen
• semester
• semi
• semi-
• semibreve
• semicircle