Good man or worthy
Degan is likely a variant of the Irish name Degnan or the Welsh name Degan, often associated with the Old Irish word 'degh' meaning good or worthy. It may also function as a modern variation of the surname Deegan. In some contexts, it is considered a shortened form of the name Cadogan.
Less common today
Degan isn't in the latest US Top 1000. It last peaked at #2,681 in 2008.
US births per 5-year period, 1990βpresent (SSA data).