There are 16 words that end with 'niac'.
maniac | ammoniac | brainiac |
demoniac | simoniac | egomaniac |
insomniac | monomaniac | pyromaniac |
algolagniac | dipsomaniac | mythomaniac |
bibliomaniac | megalomaniac | kleptomaniac |
nymphomaniac | ||
Note: These 16 words that end with 'niac' are found from the USA & Canada version of the tournament Scrabble word list.