Secular [sec·u·lar] adj. 1. Worldly rather than spiritual. 2. Not specifically relating to religion or to a religious body. “A secular book.”

Oxymoron [ox·y·mo·ron] n.pl. A phrase in which two words of contradictory meaning are used together for special effect, for example, “wise fool” or “to make haste slowly.”

Pervicacious [per·vi·ca·cious] adj. Stubborn, extremely willful, obstinate. “He became quite pervicacious in his old age.”

Accoutrement [ac·cou·tre·ment] n. Additional items of dress or equipment, carried or worn by a person or used for a particular activity. The General dressed for battle in shining accoutrements.”

Paradigm [par·a·digm] n. A typical example or pattern of something; a model. “The economic paradigm was flawed.”

Vexatious [vex·a·tious] adj. 1. Full of annoyance or distress; harassed. 2. Causing or creating vexation; annoying. “Her ex-husband put her in a vexatious situation.”

Assiduous [as·sid·u·ous] adj. 1. Constant in application or attention; diligent: “An assiduous worker who strove for perfection.” 2. Unceasing; persistent: “Assiduous cancer research.”

Obtuse [ob·tuse] adj. 1. Lacking quickness of perception or intellect. 2. Characterized by a lack of intelligence or sensitivity. “An obtuse remark.” 3. Not distinctly felt. “An obtuse pain.”

Demure adj. 1. Modest and reserved in manner or behavior. “Despite her demure appearance, she is an accomplished mountain climber.”

Acrimonious [ac·ri·mo·ni·ous] adj. 1. Bitter and sharp in language or tone; rancorous: “An acrimonious debate between the two candidates.”