There are 9 12-letter words that start with 'lib'.
| liberalising | liberalistic | liberalities | 
| liberalizers | liberalizing | libertarians | 
| libertinages | libertinisms | libidinously | 
Note: These 9 12-letter words that start with 'lib' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with libe, libr, libi, liba, libb, libl, libs.
4-letter words start with 'lib' (1)