1. In the second place.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• seconadly,
• secoundly,
• secondarly,
• secondon,
• secoundry,
• secondayr,
• secondry,
• secondy,
• seconda,
• secodly,
• secondas,
• secondaly,
• seconly,
• secondlly,
• recontly,
• seconadry,
• secondray,
• secondery,
• scondly,
• secondrey

• second deck,
• second base,
• secondment,
• secondary,
• second,
• second hand,
• second-rate,
• Segundo,
• second half,
• secondarily,
• second best,
• secondo,
• second wind,
• secondhand,
• secondguess,
• second-year,
• seasoned,
• second-best,
• second gear,
• seconder.

The adjective form of the word "secondly" is "secondary".

The plural form of the word "secondly" is "secondlies".

The singular form of the word "secondly" is "second"