The 29-year-old English actor said one needs to have a special word to define her unique personality, reported Metro newspaper.
"Jennifer Lawrence is Jennifer Lawrence. You can't sum her up in any other words except Jennifer Lawrence - it should be put in the dictionary to describe one person," Claflin said.
The "Snow White and the Huntsman" actor went to praise Lawrence, 25, saying she is completely real.
"She is what she is, you like it or you lump it," he said.