DIC abdicate abdication dedicate dedication indicate indication index predicate prediction diction dictionary dictate dictation dictator dictum benediction condition contradict contradiction contradictious indict interdict predict sedition valedictory verdict vindicate edict interdiction jurisdiction malediction
GNI/GNO agnostic cognition cognizable cognizance cognizant diagnose ignore ignorance ignorant prognosticate recognize recognizable recognition cognitive diagnosis incognito prognosis
APT/EPT apt aptness adapt adaptable adaptive inapt inaptitude adaptation aptitude adept inept
ART artist artistic artless artificial artful artifact artifice artisan
CAD/CID/CAS cadence decadence accident accidental deciduous incidence incident incidental coincide coincidence coincident Occident cascade case casual occasion occasional cadaver casualty decadent recidivism
CIS concision decide decision decisive excision fratricide incise incision insecticide matricide patricide precise suicide concise excise incisive precision
RAD/RAS abrade abrasion abrasive erase erasable eraser erasure raze razor
RADI radical radicalism radicalize radicalization radicand radish radix eradicate eradicable eradication eradicator
RADI radium radius radial radiate radiation radiator radiant radio radioactive radioactivity radiology radiotelephone radiotherapy irradiate irradiation irradiant irradiance
RAP/RAV rape rapist rapacious rapacity rapid rapidity rapt rapture enrapt enrapture rapturous raptorial ravage raven ravening ravish ravishment
RAT/RATIO ratify ratio ratiocinate ratiocination ration rational rationale rationalism rationalist rationality rationalize rationalization irrational irrationality
REG regal regalia regality regent regency regicide regime regiment Regina regius region realm regnant reign regular regularity regulate regulation irregular royal royalty rigid rigidity rigor rigorous
REPT reptile reptilian surreptitious
RID/RIS ridicule ridiculous risible risibility deride derision derisive derisory
ROD/ROS rodent corrode corrosion corrosive erode erosion erosive
ROT rotary rotate rotation rotational rotator rotor rotund rotunda rotundity dextrorotatory levorotatory
RUD rude rudiment rudimental rudimentary erudite erudition
RUPT rupture abrupt abruption bankrupt bankruptcy corrupt corruption disrupt disruption erupt eruption incorrupt incorruptible interrupt interruption irrupt irruption route routine
RUR/RUS rural rustic rusticate rustication rusticity
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