9-letter words starting with proper
- properdin — a protein present in blood serum that, acting with complement, is involved in the destruction of alien cells, such as bacteria
On this page, we collect all 9-letter words starting with PROPER. It’s easy to find right word with a certain length. It is the easiest way to find 9-letter word that beginning with PROPER to use in Scrabble or Crossword puzzles.