Impish adj. Mischievous. Inclined to do slightly naughty things for fun. “He approached her with an impish grin on his face.”

Benign adj. Mild or favorable (result). Gentle, kind, good. “The results were benign and required no treatment.”

Amicable adj. Having a spirit of friendliness; without arguments or serious disagreement. “An amicable agreement between the two firms.”

Patronize v. Treat with an apparent kindness that betrays a feeling of superiority. “She detests being patronized.” Frequent an establishment as a customer. “He always patronizes the same restaurant.”

Incessant adj. Continuing without pause or interruption. “The incessant noise kept him awake.”

Ardent adj. Enthusiastic or passionate. “He is an ardent sports fan.”

Vituperative adj. Bitter and abusive. “The critic’s vituperative review was needlessly harsh.”

Servile [ser·vile] adj. Having or showing an excessive willingness to serve or please others. “She wrote a servile letter to her upset neighbor.”

Phalanx n. A group of people or things of a similar type forming a compact body or brought together for a common purpose. “A phalanx of lawyers took charge of the case.”

Tangential adj. Superficially relevant; divergent. Diverging from a previous course or line; erratic. “He took credit for anything tangentially related to their work.”