• lassic,
• cassies,
• lases,
• kissies,
• glassses,
• lasies,
• passies,
• classses,
• glassies,
• lastes,
• lassez,
• kassies,
• classees,
• lassiez,
• classies,
• dassies,
• slasses,
• lassoed,
• lossses,
• glassis

• Lakeesha,
• Lakesha,
• Lakiesha,
• lazos,
• lasix,
• lassoes,
• Lassos,
• lacasse,
• lagasse,
• Lakeshia,
• lakes,
• lagos.

The adjective form of the word "lassies" is "lassie". For example, you could refer to a group of young girls as "lassie girls".