There are 8 13-letter words that start with 'flo'.
| flocculations | floodlighting |
| floricultural | floricultures |
| floristically | flourishingly |
| flowchartings | flowerinesses |
Note: These 8 13-letter words that start with 'flo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with floo, flor, flow, floc, flou, floa, flop, flos, flot, flog, floe, flok, flon.
4-letter words start with 'flo' (5)