How to spell SECESN correctly?

The correct spelling for "secesn" could be "secession", which refers to the act of withdrawing or separating from a larger entity, such as a country or organization. Other possible correct spellings could be "session", "cession" or "succession", depending on the intended meaning.

• secern The doctor was able to secern the subtle difference between the two diseases.
• seen I had seen the movie "The Usual Suspects" last night.

Intertubing

• antedating
• entertain
• entertainer
• entertaining
• inditing
• inner-tubing
• intertwine
• interurban
• intuiting
• undertaking