- kaleidoscope24
- karyokineses23
- karyokinesis23
- karyokinetic26
- karyological25
- katzenjammer41
- keratinizing29
- keratoplasty22
- keratotomies19
- ketosteroids17
- keyboardists22
- kickstarting26
- kilocalories21
- kindergarten21
- kindlinesses20
- kinesthesias19
- kinetochores22
- kinetoplasts21
- kinetoscopes23
- kinglinesses21
- kinnikinnick31
- kitchenettes22
- kitchenwares25
- kleptomaniac27
- kleptomanias24
- klutzinesses28
- kneecappings29
- knightliness23
- knottinesses18
- knuckleballs31
- knucklebones30
- knuckleheads29
- kremlinology26
- kwashiorkors25
- kymographies28