skinnier
Futurama
Trousers
strengths
trainers.
One option is a bouffant.
carilium
Verazano Narrows Bridge
It's not seven but eight letters: republic.
Together
dismount is the opposite of mount and contains eight letters
There is a minor planet called Mannheim, which starts with M, ends with M, and has eight letters.
Eleven states have exactly eight letters in their names.