15 letters
- revolutionizers31
- revolutionizing34
- rheumatologists24
- roentgenologies22
- roentgenologist22
- schoolmasterish26
- sedimentologies23
- sedimentologist23
- semicolonialism27
- sociobiological28
- sociobiologists24
- sociolinguistic26
- solderabilities21
- solidifications24
- solipsistically26
- solitudinarians20
- solubilizations31
- stadtholderates20
- stadtholdership25
- stereologically25
- stratovolcanoes24
- subproletariats23
- succinylcholine33
- symptomatologic32
- technologically31
- thromboembolism33
- toxicologically35
- trinitrotoluene19
- unchronological30
- unrevolutionary26
- volatilizations31
- voluntarinesses23
- wholesomenesses25