What does Dermot mean?
Dermot /der-mot/ [2 sylls.] as a boys' name is of Irish and Gaelic origin, and the meaning of Dermot is "free man". Actor Dermot Mulroney.
How popular is Dermot?
Dermot is a rare given name for men. Dermot is also a unique last name for all people. (2000 U.S. Census)
Popular varying forms of Dermot (not ranked) are Jeremiah (#56 in 2014) and Kermit. Adoption of these boy names was at its highest during 1900-1909 (usage of 0.606%) and has become much lower since (usage 0.472%, 22.1% less), with the form Kermit becoming less fashionable. Jeremiah (#56) is the most chic baby name here, with this name undergoing a rebound in popularity. Below is a graphed analysis of the popularity of Dermot and related names. (Top 1000 Baby Names Records, 2014)