There are 19 6-letter words that start with 'swi'.
| swifts | swills | swimmy | swinge | swings | 
| swingy | swinks | swiped | swipes | swiple | 
| swirls | swirly | swishy | switch | swithe | 
| swived | swivel | swives | swivet | |
Note: These 19 6-letter words that start with 'swi' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with swin, swit, swim, swis, swiv, swif, swip, swir, swig, swil, swiz, swid.
4-letter words start with 'swi' (2)