to make (something) known to everyone formally
make known clearly or officially
Cases of word usage
1) to declare (something) openly (avow)
2) to declare (usually by showing a certificate) that (something is true, correct) (certify)
3) to make (something) known publicly or officially; declare (the usual word) (proclaim)
4) to declare that one has (beliefs, likes, ignorance, interests etc) (profess)
5) to make the sound of (a word etc); to declare or announce (something) formally, solemnly or officially (pronounce)
6) to declare formally that one will no longer have anything to do with (a person, belief etc) (renounce)