RISER Scrabble 5 Words With Friends 5 Definition noun a person who rises (especially from bed). noun a vertical pipe in a building. — synonyms: riser_pipe, riser_pipeline, riser_main noun structural member consisting of the vertical part of a stair or step. See all 20 words you can make from RISER → 5-letter words Words starting with R Words ending with R ← Unscramble different letters