There are 18 words that end with 'tlines'.
| cutlines | hotlines | potlines |
| setlines | outlines | ratlines |
| beltlines | buntlines | bustlines |
| gantlines | flatlines | plotlines |
| trotlines | coastlines | frontlines |
| frostlines | sightlines | waistlines |
Note: These 18 words that end with 'tlines' are found from the USA & Canada version of the tournament Scrabble word list.