1. In a merry way.

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

• laughingp,
• kaughingly,
• paughingly,
• oaughingly,
• lzughingly,
• lsughingly,
• lwughingly,
• lqughingly,
• layghingly,
• lahghingly,
• laighingly,
• lauthingly,
• laghingly,
• laugingly,
• luaghingly,
• lawghingly,
• sughingly,
• laggungly,
• laothingly,
• Loadhingly

• lashing,
• lacewing fly,
• laughingstock,
• laughing gull,
• lacking,
• lovingly,
• laughing owl,
• lacewing,
• lashings,
• lagging,
• laughing,
• laughing gas.

The adjective form of "laughingly" is "laughing".

The plural form of the word "laughingly" is the same, as it is an adverb and does not change in plural form.

The singular form of the word "laughingly" is "laughing"