The word "backfields" uses 10 letters: abcdefikls.
backfields is a valid word in this word list. For a definition, see the external dictionary links below.
Try a search for backfields in these online resources (some words may not be found):
Wiktionary - OneLook Dictionaries - Merriam-Webster - Google Search
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Words formed by adding one letter before or after backfields (in bold), or to abcdefikls in any order:
d - fiddlebacks
Shorter words found within backfields
ab abed abide ace aced acid ad ae ai aid aide ba bad bade be bead bed bi bice bid bide biface cab cad cade cadi cafe caid cebid cedi ceiba dab dace de deaf deb decaf defi dib dice die ed ef fa face faced fad fade fed fib fice fid fie ice iced id idea if