1) Amplification 2) Cloud of words 3) Copia verborum 4) Dilating 5) Flow of words 6) Looseness 7) Scatter 8) Spread 9) Verbiage 10) Verbosity Found on https://www.crosswordclues.com/clue/diffuseness
• (n.) The quality of being diffuse; especially, in writing, the use of a great or excessive number of word to express the meaning; copiousness; verbosity; prolixity. Found on http://thinkexist.com/dictionary/meaning/diffuseness/
Dif·fuse'ness noun The quality of being diffuse; especially, in writing, the use of a great or excessive number of word to express the meaning; copiousness; verbosity; prolixity. Found on http://www.encyclo.co.uk/webster/D/64