Is there a synonym suggestion keyboard out there for iPhone I just want to know if there is a more comprehensive dictionary and ideally synonym suggesting keyboard for an iPhone.
I found two apps that might fit this bill:

The first: a keyboard with synonym suggestions. ($4), Hemingboard Rhymes, Puns, and Synonyms keyboard. 

The second: a word processor with advanced features including synonyms/antonyms. ($4), WriteRight.