List of 13-letter words containing EF

ANTIDEFLATION ANTIREFLEXIVE ANTIREFORMING ANTIREFORMIST ATMOSPHEREFUL BACKSPACEFILE BAREFACEDNESS BEFITTINGNESS BEFUDDLEMENTS BELIEFFULNESS BENEFACTRICES BENEFACTRIXES BENEFICENTIAL BENEFICIARIES BENEFICIATING BENEFICIATION BIREFRINGENCE BRIEFLESSNESS BUMBLEBEEFISH CALEFACTORIES CHANCEFULNESS CHANGEFULNESS CHIEFTAINCIES CHIEFTAINRIES CHIEFTAINSHIP CLOSEFISTEDLY COEFFICIENTLY COEFFLUENTIAL COUNTEREFFORT COUNTERREFORM CYCLODIOLEFIN CYCLOOLEFINIC DEFEASIBILITY DEFECTIBILITY DEFECTIVENESS DEFENCELESSLY DEFENESTRATED DEFENESTRATES DEFENSELESSLY DEFENSIBILITY DEFENSIVENESS DEFERENTIALLY DEFERRIZATION DEFERVESCENCE DEFIBRILLATED DEFIBRILLATOR DEFIBRINATION DEFLAGRATIONS DEFLECTIONIZE DEFLECTOMETER DEFLEXIBILITY DEFLOCCULATED DEFLOCCULATOR DEFLORESCENCE DEFORESTATION DEFORMABILITY DEFORMATIONAL DEREFERENCING DESIREFULNESS DEVICEFULNESS DIEFFENBACHIA DISGRACEFULLY DISTASTEFULLY EFFECTIVENESS EFFECTUALNESS EFFERVESCENCE EFFERVESCENCY EFFERVESCIBLE EFFICACIOUSLY EFFLORESCENCE EFFLORESCENCY EFFORTFULNESS ELECTROREFINE FOREFEELINGLY GRIEFLESSNESS GRUDGEFULNESS HALLEFLINTOID HANDKERCHIEFS HASSENPFEFFER HENCEFORWARDS HORSEFEATHERS INDEFATIGABLE INDEFATIGABLY INDEFICIENTLY INDEFLECTIBLE INEFFABLENESS INEFFECTIVELY INEFFECTUALLY INEFFICACIOUS INEFFICIENTLY IRREFRANGIBLE IRREFRANGIBLY JEFFERSONIANS LABEFACTATION LACHRYMAEFORM LIQUEFACTIONS MALEFICIATION MYNPACHTBRIEF NAVICULAEFORM NEFANDOUSNESS NEFARIOUSNESS NONBENEFICENT NONBENEFICIAL NONBLAMEFULLY NONDEFAMATORY NONDEFAULTING NONDEFEASANCE NONDEFEASIBLE NONDEFENSIBLE NONDEFENSIBLY NONDEFERRABLE NONDEFICIENCY NONDEFILEMENT NONDEFINITELY NONDEFINITION NONDEFINITIVE NONDEFLECTION NONDEFLECTIVE NONEFFETENESS NONEFFICIENCY NONEFFUSIVELY NONGRACEFULLY NONLIQUEFYING NONPREFERABLE NONPREFERABLY NONPREFERENCE NONREFILLABLE NONREFINEMENT NONREFLECTING NONREFLECTION NONREFLECTIVE NONREFRACTING NONREFRACTION NONREFRACTIVE NONREFUELLING NONREFUNDABLE NONREFUTATION OVERCAREFULLY OVERDEFENSIVE OVERDEFIANTLY PALATEFULNESS PINGUEFACTION PRAEFECTORIAL PRAEFLORATION PRAEFOLIATION PRAISEFULNESS PREBENEFITING PREDEFICIENCY PREDEFINITION PREFABRICATED PREFABRICATES PREFABRICATOR PREFAMILIARLY PREFATORIALLY PREFERABILITY PREFERREDNESS PREFERTILIZED PREFIGURATION PREFIGURATIVE PREFIGUREMENT PREFLAGELLATE PREFORMULATED PREFOUNDATION PREFRIENDSHIP PREFUNCTIONAL PREPREFERENCE PREREFINEMENT PRIZEFIGHTERS PRIZEFIGHTING PROREFERENDUM PUTREFACTIBLE QUATREFEUILLE RAREFACTIONAL REBUKEFULNESS REDEFINITIONS REFABRICATION REFAMILIARIZE REFASCINATION REFASHIONMENT REFECTORARIAN REFEDERALIZED REFERENDARIES REFERENTIALLY REFERTILIZING REFLECTEDNESS REFLECTIONING REFLECTIONIST REFLECTOMETER REFLECTOMETRY REFLECTORIZED REFLECTOSCOPE REFLEXIBILITY REFLEXIVENESS REFLEXOGENOUS REFLEXOLOGIES REFLEXOLOGIST REFLORESCENCE REFLUCTUATION REFOCILLATION REFORESTATION