Slender or little hollow
Caynen is a modern phonetic variation of the Irish name Cianan, which is a diminutive of Cian. It likely evolved as a stylistic blend influenced by names like Cayden and Canaan. While its roots are Gaelic, its current form is primarily an American invention.
Less common today
Caynen isn't in the latest US Top 1000. It last peaked at #9,481 in 2018.
US births per 5-year period, 1990βpresent (SSA data).