a fascinating list of portmanteau words (via k), ranging from the useful / interesting:
affluenza = affluence + influenza
cellophane = cellulose + diaphane
insinuendo = insinuation + inneuendo
Muppet = marionette + puppet
to the possibly incorrect:
workaholic = work + addict
lox = liquid + oxygen
to the utterly baffling:
smudgemate = smudge + estimate
dormobile = dormitory + automobile