Which Word Does Not Belong?

Riddle: Which word is the odd one out: Seventy, Brawl, Clover, Proper, Carrot, Swing, Change, Travel, Sacred, Stone?

Answer: Carrot. When the first and last letters are removed from the other words, they still spell another word.

Source: https://www.riddles.com/8704

Which word is the odd one out: Seventy, Brawl, Clover, Proper, Carrot, Swing, Change, Travel, Sacred, Stone? — Which word does not belong? by Kelly Slater v1.

Riddle: Which word is the odd one out: Seventy, Brawl, Clover, Proper, Carrot, Swing, Change, Travel, Sacred, Stone? Answer: Carrot. When the first and last letters are removed from the other words, they still spell another word. — by Kelly Slater v2.