Related Clues:

• Singularly
• See 21 Across
• Unfriended
• See 19 Across
• Admiral Byrd's book
• Flying solo, e.g.
• "In bad company," according to Bierce
• *With 7-Across, like a couple romancing
• Friendless and feeling it
• As soloist
• Last word of 'Farmer in the Dell'
• Without any help
• In seclusion
• "__ Again (Naturally)": 1972 #1 song
• '' . . . by bread ___''