backflow

The word backflow uses 8 letters:abcfklow.

BACKFLOW is playable in:

Words With Friends25
Scrabble US22
Scrabble UK22

backflow is a valid word in this word list. For a definition, see the external dictionary links below.

Try a search for backflow in these online resources (some words may not be found):
Wiktionary - OneLook Dictionaries - Merriam-Webster - Google Search
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