There are 18 words that start with 'sleek'.
| sleek | sleeks | sleeky |
| sleeked | sleeken | sleeker |
| sleekit | sleekly | sleekens |
| sleekers | sleekest | sleekier |
| sleeking | sleekened | sleekiest |
| sleekness | sleekening | sleeknesses |
Note: These 18 words that start with 'sleek' are found from the USA & Canada version of the tournament Scrabble word list.