avow
verb (formal)- avow that… | avow something | + speech
to say clearly and often publicly what your opinion is, what you think is true, etc. Topics Opinion and argumentc2声明;公开宣称 Word OriginMiddle English (in the senses ‘acknowledge, approve’ and ‘vouch for’): from Old French avouer ‘acknowledge’, from Latin advocare ‘summon in defence’, from ad- ‘to’ + vocare ‘to call’.