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Definition of unethical
unethical
/ʌnˈɛθɪkəl/
un · eth · i · cal
Adverb:unethically
unethical Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
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• adjective
1
Not morally correct; violating accepted moral principles or standards of professional conduct.
Example
"The committee concluded that concealing the financial conflict of interest was unethical."
Synonyms
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Word Origin & Etymology
Formed in English by adding the privative prefix 'un-' to 'ethical', which derives from Ancient Greek 'ēthikos' (relating to character or morals), from 'ēthos' (accustomed place, custom, or moral character).
Cite this Entry
Wordmom. (2026). Definition of Unethical. In Wordmom Dictionary. Retrieved Nov 2, 2026, from https://wordmom.com/dictionary/unethical