IPhone stopped suggesting words when texting?

I have an IPhone 4. Recently it stopped suggesting words when I'm texting. Did I accidentally turn that function off? If I did, how do I get it back?

Could swipe near the top of the keyboard & see if that brings it back. Usually is the quick way to hide it.

Could swipe near the top of the keyboard & see if that brings it back. Usually is the quick way to hide it.