Related Clues:

• Common thing?
• Sink or swim, e.g.
• Verb accompanier
• 61-Across, for example
• Word ending in 'o' in Esperanto
• What '-ence' forms
• It may be common
• It may be proper
• Proper ___
• Friend or foe, e.g.
• Substantive
• Verb, for example
• Sentence starter
• Subject, usually
• Something in writing?