Unwanted underlined in words when using Fleksy Keyboard
I researched on Fleksy Keyboard and there's not Spell checker for disable it. so,

 Goto -&gt; Android Settings -&gt; Language &amp; Keyboard -&gt; Touch Input -&gt; Text input -&gt; Spell correction


or, on Lollipop :


  Goto -&gt; Android Settings -&gt; Language &amp; Keyboard -&gt; Spell checker


and then, turn it off

How to turn off red-dotted-underline spelling check when text-messaging?