The TweentyFouteen theme auto hyphenates text to make it look less egged in narrow columns. Some people do not like it.
You can remove it using the CSS module of the Jetpack Plugin. You can read more about the jetpack plugin.

Here is how to remove auto-hypination:

1. Activate theJetpack plugin (Dashboard->Plugins)
2. Activate the Custom CSS module in the Jetpack settings.
3. In Appearance-> Edit CSS add the following css and save.

.entry-content,
.entry-summary,
.page-content,
.nav-links,
.comment-content,
.widget
 {
   -webkit-hyphens: none;
   -moz-hyphens:    none;
   -ms-hyphens:     none;
   hyphens:         none;
}

Make sure you copy all of the above text including the closing curly bracket.