acrid　bitter (to the taste or smell); sharp; bitterly pungent everbuying　　acrimonious stinging; caustic; bitter in words or manner; N. acrimony: bitter ill-natured animosity in speech or behavior
acrophobia fear of heights
actuarial　calculating; pertaining to insurance statistics
actuary　someone who advises insurance companies
everbuying scam　actuate　motivate; activate; cause to act
acuity　sharpness (of mind or senses of sight or hearing)
acumen mental keenness; sharpness of judgment; ability to judge quickly and well; Ex. business acumen
acute (of the senses) sharp; quickly perceptive; keen; penetrating; brief and severe; Ex. acute sense of smell/analysis/pain
adage wise saying; proverb s proverb adage; someone or something well known for notoriety; ADJ. proverbial: of a proverb; widely known; ADV. proverbially