Related Clues:

• Persist
• Stick with it
• Don't give up
• Not call it quits
• Keep working hard
• Like some nails
• Not give up
• Apply, as false fingernails
• Continue to exist
• Continue to be
• Apply fake fingernails
• Apply, as a decal
• Gut it out
• Pursue course doggedly
• Continue firmly or obstinately