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We found 8 dictionaries with English definitions that include the word pertinaciousness: Click on the first link on a line below to go directly to a page where "pertinaciousness" is defined. General (7 matching dictionaries) pertinaciousness: Collins English Dictionary [home, info] pertinaciousness: Merriam-Webster's Online Dictionary, 11th Edition [home, info] pertinaciousness: Wordnik [home, info] pertinaciousness: Dictionary.com [home, info] pertinaciousness: Webster's 1828 Dictionary [home, info] pertinaciousness: Free Dictionary [home, info] pertinaciousness: Dictionary/thesaurus [home, info] Business (1 matching dictionary) pertinaciousness: Legal dictionary [home, info] (Note: See pertinacious for more definitions.)

Quick definitions from WordNet (pertinacious) ▸ adjective:  stubbornly unyielding ("The most vocal and pertinacious of all the critics") ▸ Also see pertinacious