I have a large document with narrower paragraph width than regular (approx 5 average words long), and I want to disable hyphenation short of having the opportunity to allow hyphenation of chosen words (usually where TeX produces horribly overflowing boxes as a result of not being allowed hyphenation and not having enough tolerance).
I know I can disable hyphenation with
\hyphenpenalty=10000 but then I cannot even get TeX to hyphenate anything, even explicitly (or do I?)
Essentially, I want a white-list hyphenation strategy. No hyphenation of anything, except words of my choosing, in places of my choosing, in hyphenation pattern of my choosing.
I have tried
\hyphenpenalty=9999 but that still allows TeX to occasionally hyphenate some words.
I am on MikTex, and use Xetex and polyglossia, but I am not sure if it matters all that much.