The word isocarboxazid uses 13 letters:aabcdiioorsxz.

ISOCARBOXAZID is playable in:

Words With Friends36
Scrabble US34
Scrabble UK34

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

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