There are 12 words that start with 'knob'.
| knob | knobs | knobby |
| knobbed | knobbly | knobbier |
| knoblike | knobbiest | knobblier |
| knobbliest | knobkerrie | knobkerries |
Note: These 12 words that start with 'knob' are found from the USA & Canada version of the tournament Scrabble word list.