Umm, how about "shuttle"?
Pepper
Withhold, withheld, fishhook
streetcars
queue
Bleed
Pepper
Exuded or exudes.
streetcars
Withhold, withheld, fishhook
dermal
Deline
queue
Bleed
spotted, between
bladders
duple, ruble
Some six letter words with the same first and fourth letter are:attainbabblebarberchachadeadlydoodaddoodleeateryfluffygarglegooglemammalopposepepperpuppetramrodseasonteethevelvetzigzag