Sometimes, when using the hyphenat package to prevent hypenation in sentences, the following undesirable aesthetic occurs, as illustrated in the first paragraph of the output of this MWE:
\documentclass{book}
\usepackage[none]{hyphenat} % To prevent hyphenation
\begin{document}
\large
A paragraph with sentences comprised of some-long-words. A paragraph with sentences comprised of some-long-words. A paragraph with sentences comprised of some-long-words. The same paragraph with sentences comprised of some-long-words.
\vskip 10pt
A paragraph with sentences comprised of some-long-words. A paragraph with sentences comprised of some-long-words. A \ paragraph with sentences comprised of some-long-words. The same paragraph with sentences comprised of some-long-words.
\end{document}
In order to force the paragraph to ``look better'', I make use of \\ in the second paragraph; but as you can see, the justification of the second line is affected. (The same thing happens when one uses, for example, \newline as well)
I know that I can force the desired justification by a series of hfills, but I am wondering is there an automatic way to preserve the justification of all sentences when trying to prevent the described undesirable aesthetic---as it can happen fairly often when typesetting large documents?
More specifically,
QUESTION: When using hypenat and trying to correct an overrun of words in a given sentence with \\ (or the like), how may the desired justification of the said sentence be automatically be preserved? (I know word \hfill word \hfill word \hfill etc. would work, but since the problem can occur many times, I would like, if possible, to apply \\ (or something similar) each time, and not have to deal with the \hfills to accomplish this.)
Thank you.


\linebreakor (generally)\sloppy. (it does what the work says. That is bad typography). – Ulrike Fischer Aug 05 '21 at 14:51\emergencystretchto increase the space TeX will allow between words in difficult paragraphs, and themicrotypepackage will allow font expansion in place of long interword spaces. – Davislor Aug 05 '21 at 18:05\hfillis almost always the wrong approach. The only legitimate use I see for it is if the left portion of the line is to be left justified, and the right portion flush right, with an obvious gap between, such as a "signature" on an epigraph. – barbara beeton Aug 05 '21 at 19:06\\explicitly prevents justification and leaves the line short. also use of the primitive\vskipseems strange in a latex document. Since you are preventing hyphenation you should probably use\sloppyyou will need the extra white space to make up for the lack of hyphenation. – David Carlisle Aug 05 '21 at 20:27\emergencystretchcommand is part of the LaTeX3 kernel. Themicrotypepackage is an entirely separate thing that might also help. – Davislor Aug 05 '21 at 20:50