Norman Lewis presents a systematic method for rapidly expanding one's vocabulary through etymology, the study of word origins and derivations. The book is organized as an interactive workbook divided into three main parts, with interspersed grammar and spelling intermissions and three comprehensive tests that allow readers to measure their progress.
Lewis opens by establishing a central problem: Children of 10 possess recognition vocabularies exceeding 20,000 words and learn hundreds of new terms each year, while most adults who have left school add fewer than 25 to 50 words annually. He offers three self-scoring diagnostic assessments so readers can benchmark their current abilities, then attributes the decline in adult vocabulary growth to the loss of what he calls the "powerful urge to learn," borrowing the phrase from Roland Gelatt's review of Caroline Pratt's
I Learn from Children. Drawing on research from the Human Engineering Laboratory and from universities, Lewis argues that vocabulary size correlates closely with career success, academic achievement, and measured intelligence. Citing educational psychologist Edward Thorndike's research, he contends that learning ability remains strong well past age 20, countering the belief that adults cannot learn new material. Lewis promises that concentrated effort over two to three months can reverse years of stagnation.
The book's method rests on two principles. First, readers must participate actively: pronouncing words aloud, writing answers, and completing every exercise rather than passively reading. Second, vocabulary is best acquired through etymology. Learning a single Latin or Greek root, Lewis demonstrates, unlocks the meanings of 10 or 20 related English words. The root
ego (I, self), for example, leads to
egoist,
egotist,
egocentric,
egomaniac, and
alter ego. This connective tissue makes new words easier to remember and allows readers to decode unfamiliar terms by recognizing their structural components: prefixes, roots, and suffixes.
Part One, spanning Chapters 3 through 8, groups vocabulary around five thematic clusters. Chapter 3 introduces 10 personality types, including
egoist,
altruist,
introvert,
extrovert,
misanthrope,
misogynist, and
ascetic, and traces each term to its Latin or Greek origins. From the root
misein (to hate), Lewis branches into
misanthropy,
misogyny, and
misogamy; from
gamos (marriage), he explores
monogamy,
bigamy,
polygamy, and
polyandry.
Chapter 4 teaches vocabulary through 10 medical specialists, from
internist and
gynecologist to
psychiatrist and
neurologist, using roots such as
derma (skin),
ophthalmos (eye),
kardia (heart),
neuron (nerve), and
psyche (mind). Chapter 5 extends this approach to practitioners like the
psychoanalyst,
osteopath,
chiropractor,
podiatrist, and
graphologist, introducing roots for hand (
cheir), foot (
pous/podos), bone (
osteon), tooth (
odontos), and writing (
graphein). Chapter 6 covers 10 scientists, from
anthropologist and
astronomer to
entomologist and
semanticist, drawing on roots like
astron (star),
ge (earth),
bios (life),
tome (a cutting), and
philein (to love). Chapter 7 presents 10 adjectives for types of liars, including
notorious,
consummate,
incorrigible,
chronic,
pathological, and
egregious, and uses them to teach roots such as
chronos (time),
pathos (suffering or feeling),
scio (to know), and
grex/gregis (herd or flock), branching into words like
anachronism,
synchronize,
sympathy,
antipathy,
empathy,
telepathy,
omniscient,
gregarious, and
segregate. Chapter 8 closes Part One with a 120-item comprehensive test.
Between the main chapters, Lewis inserts 10 "Brief Intermissions" addressing grammar, usage, and spelling. These sections argue that grammar follows the speech habits of educated people rather than rigid textbook rules, endorsing informal constructions like "It is me" and the split infinitive while correcting genuine errors. The spelling intermissions present mnemonic devices for conquering the 100 most commonly misspelled English words, arguing that association is more effective than repetitious drill.
Part Two, covering Chapters 9 through 13, builds momentum with four thematic chapters and a second comprehensive test. Chapter 9 teaches 10 action verbs, including
disparage,
equivocate,
proscribe,
obviate,
militate,
malign,
condone, and
placate, exploring the contrasting Latin roots
malus (bad) and
bonus/bene (good) to generate extended families of words:
malediction and
benediction,
malevolent and
benevolent,
malefactor and
benefactor. Chapter 10 addresses speech habits through adjectives like
taciturn,
laconic,
garrulous,
verbose,
voluble,
cogent,
vociferous, and
loquacious, using the root
loquor (to speak) to branch into
soliloquy,
ventriloquist,
colloquial, and
circumlocution, and
somnus (sleep) to reach
somnambulism,
insomnia, and
soporific. Chapter 11 presents 10 insulting terms, including
martinet,
sycophant,
dilettante,
virago,
chauvinist,
iconoclast,
atheist, and
hypochondriac, and uses them to teach an extensive network of roots covering family relations (
pater,
mater,
frater,
soror,
uxor), forms of killing (
patricide,
fratricide,
genocide,
regicide), various manias (
kleptomania,
pyromania,
megalomania), and common phobias (
claustrophobia,
agoraphobia,
acrophobia). Chapter 12 introduces 10 complimentary adjectives, among them
convivial,
indefatigable,
ingenuous,
perspicacious,
magnanimous,
stoical,
intrepid,
scintillating, and
urbane, exploring roots for life (
vivo,
vita), belief (
credo), looking (
specto), sharpness (
acuo), mind (
animus), trembling (
trepido), spark (
scintilla), and city and country (
urbs,
rus/ruris). Chapter 13 provides the second 120-item test so readers can compare their scores against the first.
Part Three, spanning Chapters 14 through 17, finishes the program with three thematic chapters and the final test. Chapter 14 teaches words for common phenomena:
penury,
vicarious,
ephemeral,
euphemism,
badinage,
bovine,
nostalgia,
cacophony,
carnivorous, and
clandestine. From the root
carnis (flesh), Lewis reaches
carnivore,
carnage,
incarnate, and
reincarnation; from
voro (to devour), he branches into
herbivorous,
omnivorous, and
voracious; and from
omnis (all), he covers
omnipotent,
omnipresent, and
ubiquitous. Chapter 15 introduces 10 verbs ending in
-ate, including
enervate,
castigate,
recapitulate,
simulate,
alleviate,
commiserate, and
vacillate, extending into
synergism,
decapitate,
capitulate,
dissimulate,
levitate,
levity,
ambivalent, and
oscillate. Chapter 16 teaches 10 adjectives ending in
-ous, such as
obsequious,
querulous,
supercilious,
obstreperous,
impecunious,
chivalrous,
innocuous,
bibulous,
cadaverous, and
dolorous, with roots covering following (
sequor), complaining (
queror), cattle (
pecus), horse (
cheval), drinking (
bibo), falling (
cado), and suffering (
doleo). Chapter 17 presents the final 120-item comprehensive test, and readers record all three scores side by side to gauge their progress.
The book closes with Chapter 18, which supplies detailed answers to etymological "teaser questions" posed at the end of earlier chapters, and an appendix cataloguing dozens of specialized phobias using Greek roots readers have encountered throughout the book. Chapter 19 outlines five steps for continued vocabulary growth: staying actively receptive to new words; reading at least one book and several magazines every week; pausing to engage with unfamiliar words rather than skipping them; deliberately exploring new fields of knowledge; and setting a daily goal of finding several new words. Lewis stresses that vocabulary building gains momentum over time, as the process snowballs with sustained effort.