1. Fearlessly, often recklessly daring; bold. See Synonyms at adventurous, brave.
2. Unrestrained by convention or propriety; brazen or insolent: audacious rudeness.
3. Spirited and original: an audacious interpretation of two Jacobean dramas.
[French audacieux, from Old French audace, boldness, from Latin audācia, from audāx, audāc-, bold, from audēre, to dare, from avidus, avid; see AVID.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.