1) Befog 2) Cloud 3) Conceal 4) Exclusively Saxon word 5) Exclusively Anglo word 6) Haze over 7) Hide 8) Make less visible or unclear 9) Make unclear 10) Mist 11) Obfuscate 12) Obnubilate 13) Obscure 14) Word with Anglo-Saxon origins 15) Word of purely Anglo origin Found on https://www.crosswordclues.com/clue/becloud
Be·cloud' transitive verb [ imperfect & past participle Beclouded ; present participle & verbal noun Beclouding .] To cause obscurity or dimness to; to dim; to cloud. « If thou becloud the sunshine of thine eye. Quarles.... Found on http://www.encyclo.co.uk/webster/B/28