portmanteau, portmanteau word, blend - a new word formed by joining two others and combining their meanings; "`smog' is a blend of `smoke' and `fog'"; "`motel' is a portmanteau word made by combining `motor' and `hotel'"; "`brunch' is a well-known portmanteau"

compulsive - a person with a compulsive disposition; someone who feels compelled to do certain things