if you do something to the bitter end, you continue it until it is finished, although it is difficult and takes a long time.

Many climbers gave up before they reached the summit, but I was determined to stick it out to the bitter end.

• roller-coaster
• roller coaster
• roll in
• rolling in
• rolling in something
• rolling in the aisles
• roll in the hay
• roll off the tongue
• roll out
• roll out something
• roll out the red carpet
• roll out the red carpet for
• roll out the red carpet for someone
• roll over
• roll over in grave
• roll over in someone's grave
• roll over something
• roll sleeves up
• roll up sleeves
• roll up your sleeves
• roll with it
• roll with the punches
• roll your sleeves up
• Rome wasn't built in a day.
• roof caves in