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adjectivehappening by chance or unexpectedly or unintentionally
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adjectivenot of prime or central importance
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nouna musical notation that makes a note sharp or flat or natural although that is not part of the key signaturetype of:
Words sounding like good accidental
mental gentle instrumental sentimental fundamental dental rental experimental accidental oriental parental monumental governmental elemental detrimental coincidental temperamental departmental incidental ornamental developmental regimental transcendental occidental incremental supplemental sacramental trental thiopental unsentimental