Possible Clues:

• Stick to or continue faithful
• Cleave (to)
• Stick to it. He is in the wrong, dear
• Stick the notice in
• Take a stick to Father back there
• Hang on
• Father is back at this point to make it stick
• Will Father stick up at this point?
• Brief instruction to billposter to paste
• Stick at it to get Father back at this point