• gladden,
• gladdun,
• gladdan,
• fladdon,
• vladdon,
• bladdon,
• hladdon,
• yladdon,
• tladdon,
• gkaddon,
• gpaddon,
• goaddon,
• glzddon,
• glsddon,
• glwddon,
• gladon,
• gladdonn,
• gladdnn,
• gladdong,
• Gladonn

• glutton,
• gluttony,
• gloating,
• gladney,
• Gladin,
• Gladwin,
• gladdened,
• gleaton,
• Glidden,
• Gladding,
• gladden,
• gladness,
• gliding.

The adjective form of the word "gladdon" is "gladdonian".

The plural of the "gladdon" can be the "gladdons".

The singular of the "gladdon" can be the "gladdon".