The word "backslides" uses 10 letters: abcdeiklss.
backslides is a valid word in this word list. For a definition, see the external dictionary links below.
Try a search for backslides 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 backslides (in bold), or to abcdeiklss in any order:
r - backsliders
Shorter words found within backslides
ab abed abide ace aced acid ad ae ai aid aide ba back backed bad bade bake baked be bead beak beck bed bi bice bid bide bike biked cab cad cade cadi caid cake caked cebid cedi ceiba dab dace dak de deb deck dib dice dick die dike ed ice iced ick id idea ka kab kadi kae kea kibe kid