| Term | Definition |
| Authentic (adj) | (literally, “from the master himself”) genuine, real, reliable, trustworthy |
| Autobiography (n) | Story of a person’s life written by the person himself or herself |
| Autocrat (n) | Ruler exercising self-derived, absolute power, despot, dictator |
| Autograph (n) | Person’s signature written by himself or herself |
| Automatic (adj) | Acting by itself; Self regulating |
| Automation (n) | Technique of making a process self operating by means of built-in electronic controls |
| Automaton (n) | (literally, “self-acting thing”) purely mechanical person following a routine; robot |
| Autonomous (adj) | Self governing; independent; sovereign |
| Autonomy (n) | Right of self government; independence; sovereignty |
| Autopsy (n) | (literally, “a seeing for oneself’) medical examination of a dead body to determine the cause of death; postmortem examination |
| Aristocracy (n) | government by a small privileged upper class; ruling class of nobles; nobility; privileged class; gentry |
| Autocracy (n) | government or country governed by one individual with self-derived, unlimited power |
| Bureaucracy (n) | government by bureaus or groups of officials; administration characterized by excessive red tape and routine |
| Democracy (n) | government or country governed by the people; rule by the majority |
| Plutocracy (n) | government or country governed by the rich |
| Technocracy (n) | government or country governed by technical experts |
| Aristocrat (n) | advocates of aristocracy; member of the aristocracy; noble; patrician |
| Democrat (n) | Member of the Democratic Party |
| Demagogue (n) | political leader who stirs up the people for personal advantage; rabble-rouser |
| Democratic (adj) | based on the principles of democracy, or government by the people |
| Democratize (v) | make democratic |
| Epidemic (adj) | affecting many people in an area at the same time; widespread |
| Epidemic (n) | outbreak of a rapidly spreading contagious disease affecting many people at the same time; plague; rash |
| Panacea (n) | remedy for all ills; cure—all; universal remedy; elixir |
| Pan-American (adj) | of or pertaining to all the countries of North, South, and Central America |
| Pandemonium (n) | wild uproar; very noisy din; wild disorder; tumult; racket |
| Panoply (n) | complete suit of armor; complete covering or equipment; magnificent array |
| Panorama (n) | complete, unobstructed view |
| Pantomime (n) | dramatic performance that is all signs and gestures without words |
| Anachronism (n) | error in chronology or time order |
| Chronicle (n) | historical account of events in the order of time; history; annals |
| Chronological (adj) | arranged order of time |
| Chronology (n) | arrangement of data or events in order of time or occurrence |
| Synchronize (v) | cause to agree in time; make simultaneous |
| Kleptomania (n) | insane impulse to steal |
| Mania (n) | madness, insanity; excessive fondness, crave |
| Maniac (n) | raving lunatic; mad or insane person; crackpot |
| Maniacal (adj) | characterized by madness; insane; raving |
| Pyromania (n) | insane impulse to set fires |
| Encyclopedia (n) | work offering alphabetically arranged information on various branches of knowledge |
| Orthopedic (adj) | having to do with orthopedics, the science dealing with the correction and prevention of deformities, especially in children. |
| Pedagogue (n) | teacher of children |
| Pedagogy (n) | art of teaching |
| Pediatrician (n) | physician specializing in the treatment of babies and children |
| Pediatrics (n) | branch of medicine dealing with the care, development, and diseases of babies and children |
| Orthodontist (n) | dentist specializing in orthodontics, a branch of dentistry dealing with straightening and adjusting of teeth |
| Orthodox (adj) | generally accepted, especially in religion; conventional; approved; conservative |
| Orthography (n) | correct spelling |
| Orthopedist (n) | physician specializing in the correction and prevention of deformities, especially in children |
| Unorthodox (adj) | not orthodox; not in accord with accepted, standard, or approved belief or practice; unconventional; heretical |
| Genealogy (n) | history of the descent of a person of family from an ancestor; lineage; pedigree |
| Genesis (n) | birth or coming into being of something; origin |
| Heterogeneous (adj) | differing in kind; dissimilar; not uniform; varied |
| Homogeneous (adj) | of the same kind; similar; uniform |
| Homogenize (v) | make homogeneous |
| Barometer (n) | instrument for measuring atmospheric pressure as an aid in determining probable weather changes. |
| Chronometer (n) | instrument for measuring time very accurately |
| Diameter (n) | straight line passing through the center of a body or figure from one side to the other; length of such a line; thickness; width |
| Meter (n) | device for measuring; unit of measure in the metric system; 39.37 inches |
| Odometer (n) | instrument attached to a vehicle for measuring the distance traversed |
| Photometer (n) | instrument for measuring intensity of light |
| Speedometer (n) | instrument for measuring speed; tachometer |
| Symmetry (n) | correspondence in measurements, shape, etc, on opposite sides of a dividing line; well-balanced arrangement of parts; harmony; balance |
| Antagonist (n) | one who is against, or contends with, another in a struggle, fight, or contest; opponent; adversary; foe |
| Antibiotic (n) | substance obtained from tiny living organisms that works against harmful bacteria |
| Antibody (n) | substance manufactured in the body that works against germs or poisons produced by germs |
| Antidote (n) | remedy that acts against the effects of a poison; countermeasure |
| Antihistamine (n) | drug used against certain allergies and cold symptoms |
| Antipathy (n) | feeling against; distaste; repugnance; dislike; enmity |
| Antiseptic (n) | substance that prevents infection by checking the growth of microorganisms; germicide |
| Antitoxin (n) | substance formed in the body as the result of the introduction of a toxin (poison) and capable of acting against that toxin |
| Antonym (n) | word meaning the opposite of another word; opposite |
| Acronym (n) | name formed from the first letter or letters of other words |
| Anonymous (adj) | nameless; unnamed; unidentified |
| Homonym (n) | word that sounds like another but differs in meaning |
| Onomatopoeia (n) | use of words whose sound suggests their meaning |
| Pseudonym (n) | fictitious name used by an author; pen name; alias |
| Synonym (n) | word having the same meaning as another word |
| Dermatologist (n) | physician specializing in dermatology, the science dealing with the skin and its diseases |
| Dermis (n) | inner layer of the skin |
| Epidermis (n) | outer layer of the skin |
| Hypodermic (adj) | beneath the skin |
| Taxidermist (n) | one who practices taxidermy, the art if preparing, stuffing, and mounting the skins of animals in lifelike form |