The word "belittlement" uses 12 letters: beeeillmnttt.
belittlement is a valid word in this word list. For a definition, see the external dictionary links below.
Try a search for belittlement in these online resources (some words may not be found):
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Words formed by adding one letter before or after belittlement (in bold), or to beeeillmnttt in any order:
s - belittlements
Shorter words found within belittlement