Aver

доказвам

dokazvam

(to prove or justify (an allegation or plea that one has made))

заявявам

zajavjavam

(to assert the truth of (something); to affirm (something) with confidence; to declare (something) in a positive manner)

настоявам

nastojavam

(to assert the truth of (something); to affirm (something) with confidence; to declare (something) in a positive manner)

твърдя

tvǎrdja

(to assert the truth of (something); to affirm (something) with confidence; to declare (something) in a positive manner)