Word Roots & One Word Substitution

Bibliophile = a person who loves and collects books. Root: biblio (book) + phile (lover of). Bibliophobe = fears books (phob = fear — opposite). Bibliosoph is not a standard word. Bibliograph is not a word. Root 'phile' (lover of): bibliophile, cinephile, anglophile, audiophile, francophile.

Oligarchy = rule by a small elite group. Root: oligos (few) + arche (rule). Democracy = rule by the people. Autocracy = rule by one person with absolute power. Plutocracy = rule by the wealthy (ploutos = wealth). Oligarchy specifically means rule by a small number — the defining feature is the small group, not their wealth.

Palindrome = a word or phrase reading the same forwards and backwards (level, civic, radar, madam). Root: Greek palindromos (running back again). Homonym = same sound/spelling, different meaning. Synonym = same or similar meaning. Anagram = word formed by rearranging letters of another.

Patricide = killing one's own father. Root: pater (father) + cide (killing). Homicide = killing any human. Fratricide = killing one's brother (frater = brother). Infanticide = killing an infant. Root 'cide' (kill): homicide, suicide, regicide (king), matricide (mother), fratricide (brother), infanticide, genocide.

Stoic = accepts pain or hardship without complaint; indifferent to pleasure or pain. From Stoa Poikile (painted porch in Athens where Stoics taught). Cynic = believes people are motivated only by self-interest. Hedonist = believes pleasure is the highest good (opposite of stoic). Epicurean = devoted to refined sensory enjoyment.

Paradox = a statement that seems self-contradictory but may reveal a deeper truth (e.g., 'You must be cruel to be kind'). Root: Greek para (against) + doxa (belief). Hyperbole = deliberate exaggeration. Euphemism = mild expression for something unpleasant. Oxymoron = two contradictory terms combined ('deafening silence') — a rhetorical device, not a statement.

Misanthrope = hates or distrusts humankind. Root: misos (hate) + anthropos (human being). Philanthropist = loves humanity (exact opposite). Misogynist = hates women specifically (misos + gyne = woman) — not all of humankind. Xenophobe = fears/dislikes foreigners (xenos = stranger) — not all of humankind.

Epitaph = words on a tomb in memory of the person buried. Root: epi (upon) + taphos (tomb). Epitome = a perfect example or embodiment. Epigram = a short, witty saying. Epilogue = a concluding section of a literary work. All share prefix 'epi-' (upon/over) — the distinguishing root is taphos (tomb).

Agoraphobia = fear of open or public places. Root: agora (marketplace/open space) + phobia (fear). Claustrophobia = fear of enclosed spaces (claustrum = enclosed space) — the opposite. Acrophobia = fear of heights (acros = heights). Xenophobia = fear/dislike of foreigners. Agoraphobia is the only one that specifically means fear of open/public spaces.

Numismatics = the study or collection of coins, notes, and medals. Root: Latin numisma (coin). Philately = collection and study of stamps (not coins). Speleology = scientific study of caves. Cartography = science of making maps. A numismatist is the person who studies coins. This is a standard NDA/CDS one-word substitution that repeats across years.

Anachronism = something belonging to a period other than that in which it exists; misplaced in time. Root: ana (against/back) + chronos (time). Archaism = an archaic word still used (old language, not misplaced in time). Anomaly = deviation from standard — about deviation, not time displacement. Anaemia = a blood condition — wrong domain entirely.

Narcissism = excessive interest in or admiration of oneself. Origin: Greek myth — Narcissus fell in love with his own reflection. Altruism = selfless concern for others (the opposite). Hedonism = pursuit of pleasure as the highest good (about pleasure, not self-admiration). Cynicism = belief that people are motivated only by self-interest — different quality.

Charlatan = a person who falsely claims special knowledge or ability; a fraud. Root: Italian ciarlare (to chatter/babble). Altruist = puts others' welfare first (positive — wrong domain). Pacifist = believes war is wrong; advocates non-violence (wrong domain). Protagonist = main character in a story (wrong domain). Only Charlatan = false claim to special knowledge/skill.

Iconography = use of images and symbols in visual art and communication. Root: icon (image/symbol) + graph (write/record). Calligraphy = the art of beautiful handwriting (kalli = beautiful + graph). Cryptography = writing and solving codes (kryptos = hidden). Stenography = writing in shorthand (stenos = narrow). Iconography precisely means communicating through symbols/images.

CRED = believe or trust. Credible = able to be believed (cred + ible). Credential = qualification showing trustworthiness. Incredulous = not willing to believe (in + cred + ulous). Discredit = cause to lose trust. Credulou = too ready to believe. Creed = statement of belief. Accredited = officially recognised (trusted). Knowing this root unlocks the entire credibility word family.

MAL = bad or evil. Malice = wish to harm. Malfunction = fail to function correctly. Malnutrition = poor nutrition. Malevolent = wishing evil (mal + vol = bad wish). Directly opposite to BENE (good/well). Other examples: malady (illness), malodorous (bad-smelling), malpractice, maltreat. Any unfamiliar 'mal-' word in NDA vocabulary relates to something bad or defective.

PHOB = fear or aversion. Xenophobia = fear of foreigners. Claustrophobia = fear of enclosed spaces. Hydrophobia = fear of water (hydro = water). Acrophobia = fear of heights. Agoraphobia = fear of open spaces. Directly contrasted with PHILE (love of): bibliophile vs bibliophobe. Knowing PHOB unlocks all phobia names in NDA vocabulary questions.

RUPT = break or burst. Disrupt = break apart (dis + rupt). Corrupt = thoroughly broken/rotten (cor + rupt). Erupt = break out (e = out + rupt). Interrupt = break between (inter = between + rupt). Bankrupt = financially broken. Abrupt = broken off suddenly. Any 'rupt' word involves some form of breaking, bursting, or violent separation.

Philanthropy = love of humankind expressed through charitable action. Root: phil (love) + anthropos (human being). Phil appears in: bibliophile (books), audiophile (sound), philology (words). Anthropos appears in: anthropology (study of humans), misanthrope (hatred of humans), anthropomorphic (human-shaped). Contrast: philanthropy (love of humanity) vs misanthropy (hatred of humanity) — a standard NDA antonym test.

The suffix -ISM creates nouns denoting a doctrine, belief, practice, system, or condition. Examples: stoicism (philosophy of endurance), cynicism (doctrine of distrust), altruism (selfless concern), narcissism (self-love), pacifism (non-violence), anachronism (out-of-time condition), plagiarism (practice of copying). Related: -IST creates the person who holds that belief (pacifist, altruist, narcissist).