12 letters
- preparedness20
- preponderant21
- preponderate20
- preportioned20
- prepositions19
- prepossessed19
- prepossesses18
- preposterous19
- prepotencies22
- preppinesses22
- preprocessed22
- preprocesses21
- preprocessor21
- preprogramed24
- prepuberties22
- prepubescent26
- prepurchased25
- prepurchases24
- psephologies23
- psephologist23
- quadricepses29
- receptionist19
- reconception23
- redeployment23
- redepositing19
- repartitions16
- repatriating18
- repatriation16
- repatterning19
- repellencies21
- repercussion20
- repercussive23
- repetitional17
- repetitively22
- rephotograph24
- replacements23
- replantation18
- replastering19
- replenishers19
- replenishing22
- replications20
- repolarizing28
- repopularize29
- repopulating23
- repopulation21
- repositioned17
- repositories15
- repossessing18
- repossession16
- repossessors15
- reprehending22
- reprehension19
- reprehensive22
- representers16
- representing19
- repressively22
- repressurize25
- reprimanding23
- repristinate16
- reprivatized29
- reprivatizes28
- reproachable24
- reprobations19
- reprocessing21
- reproducible24
- reproducibly26
- reproduction21
- reproductive24
- reprograming23
- reprogrammed24
- reprographer22
- reprographic25
- reprovisions20
- republishers22
- republishing25
- repudiations18
- repugnancies23
- repurchasing24
- reputability22
- reputational18
- safekeepings25
- scorekeepers22
- separability21
- separateness16
- separatistic18
- septennially21
- septentrions17
- sepulchering25
- sepulchrally26
- sheepberries20
- sheepherders20
- sheepherding23
- sheepishness20
- sheepshearer19
- sidesteppers19
- sidestepping22
- sleepinesses17
- sleepwalkers24
- sleepwalking27
- steeplechase21
- steeplejacks32
- stepbrothers20
- stepchildren23
- stepdaughter21
- stepfamilies22
- stockkeepers26
- storekeepers19
- streptococci24
- streptolysin19
- streptomyces23
- streptomycin24
- subepidermal24
- susceptivity25
- sweepingness22
- telencephala23
- telephonists19
- teleprinters17
- timekeepings25
- timepleasers19
- trepanations17
- trephination19
- trepidations17
- unacceptable27
- unacceptably29
- undependable24
- underreports18
- unperceptive27
- unrepeatable21
- zeptoseconds29