15 letters
- rechoreographed28
- rechromatograph30
- reclusivenesses25
- recodifications26
- recognizability36
- recolonizations30
- recombinational27
- recommencements32
- recommendations27
- recommissioning28
- reconcentrating26
- reconcentration24
- reconceptualize36
- reconcilability29
- reconciliations24
- reconditenesses21
- reconfiguration26
- reconfirmations26
- reconnaissances24
- reconsecrations23
- reconsideration21
- reconsolidating24
- reconstitutions21
- reconstructible27
- reconstructions24
- recontaminating26
- recontamination24
- recontextualize37
- recrystallizing34
- recursivenesses24
- reflectometries25
- resectabilities22
- respectableness26
- resurrectionist20
- retroreflection23
- retroreflective26
- retroreflectors22
- retrospectively28
- seclusivenesses25
- secondarinesses21
- secretivenesses23
- secularizations30
- securitizations29
- selectivenesses24
- septendecillion26
- servomechanisms31
- specialisations23
- specializations32
- spectrographies28
- spectroscopists27
- splenectomizing38
- steeplechasings27
- subspecializing38
- superinfections27
- superspecialist26
- superspectacles29
- sympathectomies31
- synecdochically34
- technologically31
- technostructure26
- telangiectasias22
- teleconferenced28
- teleconferences27
- thermoreceptors26
- thyroidectomies26
- tonsillectomies24
- ultraprecisions24
- unappreciations27
- unobjectionable37
- unprecedentedly29
- unreconstructed26
- vivisectionists27