13 letters
- misimpression23
- multimegatons24
- multimegawatt26
- multimetallic26
- multimillions24
- nonimmigrants24
- optimisations20
- optimizations29
- overestimated21
- overestimates20
- overimpressed24
- overimpresses23
- overoptimisms26
- overoptimists23
- overstimulate22
- penultimately25
- planetesimals22
- polarimetries20
- preexperiment30
- preliminaries21
- preliminarily24
- presentiments21
- primatologies22
- primatologist22
- primitiveness24
- primitivistic26
- primitivities23
- primogenitors22
- primogeniture23
- proximateness27
- pusillanimity25
- pusillanimous24
- pyrimethamine27
- reacclimatize32
- recriminating23
- recrimination21
- recriminative24
- recriminatory22
- regimentation20
- reimbursement24
- reimportation20
- reimpositions20
- reimpressions20
- ressentiments18
- restimulating21
- restimulation19
- risorgimentos19
- rudimentarily22
- saccharimeter24
- sanctimonious22
- scrimshanders23
- sedimentation19
- sedimentology23
- semimonthlies23
- sentimentally22
- sublimenesses22
- submillimeter25
- suboptimizing35
- supercriminal25
- superimposing26
- telefacsimile24
- thimblerigged27
- thimblerigger26
- timberdoodles22
- trimethoprims24
- turbidimeters21
- turbidimetric24
- unassimilable23
- unassimilated20
- underestimate19
- unimaginative25
- unimpassioned23
- unimpeachable30
- unimpeachably32
- unimplemented27
- unimportances25
- unintimidated21
- unreclaimable26
- unsentimental21
- verisimilarly24
- victimization33
- victimologies26
- victimologist26
- viscosimeters23
- viscosimetric26
- weisenheimers22
- whimsicalness26
- wimpishnesses25