13-Letter Words Containing: A,I,O,R,R,T,T

• serving to certify or endorse authoritatively

• affording the opportunity for individual participation

• equip (an electronic circuit or device) with transistors

• the act of inspiring with fear

• an act of terrorism

• someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects)

• two propositions are contradictories if both cannot be true (or both cannot be false) at the same time

• of words or propositions so related that both cannot be true and both cannot be false

• that confounds or contradicts or confuses

• in disagreement

• unable for both to exist or be true at the same time