Related Clues:

• In again
• Like leg warmers and Nehru jackets
• Nostalgic clothing style
• Like oldies
• Reminiscent of the past
• Like flip hairdos, say
• Old school
• Active leader?
• Prefix for grade
• Back in vogue
• In again, perhaps
• Old-style, perhaps
• Type of rocket
• In vogue again
• So out it's back in